Fix tests.

Author: csyonghe

source/slang/slang-check-decl.cpp

@@ -2053,7 +2053,7 @@ namespace Slang
         if (parentDecl)
         {
             parentDecl->addTag(getVarTypeTags());
-            auto unsizedMask = (int)TypeTag::Unsized | (int)TypeTag::LinkTimeSized;
+            auto unsizedMask = (int)TypeTag::Unsized;
             bool isUnknownSize = (((int)getVarTypeTags() & unsizedMask) != 0);
             if (isUnknownSize)
             {

tests/diagnostics/unsized.slang

@@ -5,6 +5,7 @@ extern static const int size = 1;
 struct V
 {
     // CHECK-DAG: ([[# @LINE+1]]): error 30070
+    int c[];
     int b[size];
     int a[];
 }