[releng] bazel: Enable errorprone on o.e.j.ssh.apache

Fix the few issues reported. (None serious.)

Change-Id: I8d72ef7d425ab61f4c27b657c92fc021850730d6
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>

Author: Thomas Wolf

org.eclipse.jgit.ssh.apache/src/org/eclipse/jgit/internal/transport/sshd/JGitSshClient.java

@@ -439,7 +439,7 @@ public boolean hasNext() {
 
 				@Override
 				public KeyPair next() {
-					if (hasElement == null && !hasNext()
+					if ((hasElement == null && !hasNext())
 							|| !hasElement.booleanValue()) {
 						throw new NoSuchElementException();
 					}

org.eclipse.jgit.ssh.apache/src/org/eclipse/jgit/internal/transport/sshd/auth/BasicAuthentication.java

@@ -95,8 +95,8 @@ public final void close() {
 
 	@Override
 	public final void start() throws Exception {
-		if (user != null && !user.isEmpty()
-				|| password != null && password.length > 0) {
+		if ((user != null && !user.isEmpty())
+				|| (password != null && password.length > 0)) {
 			return;
 		}
 		askCredentials();

org.eclipse.jgit.ssh.apache/src/org/eclipse/jgit/internal/transport/sshd/proxy/AbstractClientProxyConnector.java

@@ -31,7 +31,7 @@ public abstract class AbstractClientProxyConnector
 			.toMillis(30L);
 
 	/** Guards {@link #done} and {@link #bufferedCommands}. */
-	private Object lock = new Object();
+	private final Object lock = new Object();
 
 	private boolean done;
 

org.eclipse.jgit.ssh.apache/src/org/eclipse/jgit/internal/transport/sshd/proxy/HttpClientConnector.java

@@ -113,8 +113,8 @@ public void sendClientProxyMetadata(ClientSession sshSession)
 		IoSession session = sshSession.getIoSession();
 		session.addCloseFutureListener(f -> close());
 		StringBuilder msg = connect();
-		if (proxyUser != null && !proxyUser.isEmpty()
-				|| proxyPassword != null && proxyPassword.length > 0) {
+		if ((proxyUser != null && !proxyUser.isEmpty())
+				|| (proxyPassword != null && proxyPassword.length > 0)) {
 			authenticator = basic;
 			basic.setParams(null);
 			basic.start();
@@ -232,7 +232,8 @@ private void handleMessage(IoSession session, List<String> reply)
 		} catch (HttpParser.ParseException e) {
 			throw new IOException(
 					format(SshdText.get().proxyHttpUnexpectedReply,
-					proxyAddress, reply.get(0)));
+							proxyAddress, reply.get(0)),
+					e);
 		}
 	}
 

org.eclipse.jgit.ssh.apache/src/org/eclipse/jgit/internal/transport/sshd/proxy/HttpParser.java

@@ -31,6 +31,23 @@ public static class ParseException extends Exception {
 
 		private static final long serialVersionUID = -1634090143702048640L;
 
+		/**
+		 * Creates a new {@link ParseException} without cause.
+		 */
+		public ParseException() {
+			super();
+		}
+
+		/**
+		 * Creates a new {@link ParseException} with the given {@code cause}.
+		 *
+		 * @param cause
+		 *            {@link Throwable} that caused this exception, or
+		 *            {@code null} if none
+		 */
+		public ParseException(Throwable cause) {
+			super(cause);
+		}
 	}
 
 	private HttpParser() {
@@ -64,7 +81,7 @@ public static StatusLine parseStatusLine(String line)
 			resultCode = Integer.parseUnsignedInt(
 					line.substring(firstBlank + 1, secondBlank));
 		} catch (NumberFormatException e) {
-			throw new ParseException();
+			throw new ParseException(e);
 		}
 		// Again, accept even if the reason is missing
 		String reason = ""; //$NON-NLS-1$

org.eclipse.jgit.ssh.apache/src/org/eclipse/jgit/internal/transport/sshd/proxy/Socks5ClientConnector.java

@@ -94,7 +94,7 @@ private enum SocksAuthenticationMethod {
 		// JSON(9),
 		NONE_ACCEPTABLE(0xFF);
 
-		private byte value;
+		private final byte value;
 
 		SocksAuthenticationMethod(int value) {
 			this.value = (byte) value;

tools/BUILD

@@ -120,6 +120,7 @@ package_group(
         "//org.eclipse.jgit.packaging/...",
         "//org.eclipse.jgit.pgm.test/...",
         "//org.eclipse.jgit.pgm/...",
+        "//org.eclipse.jgit.ssh.apache/...",
         "//org.eclipse.jgit.test/...",
         "//org.eclipse.jgit.ui/...",
         "//org.eclipse.jgit/...",