Move variable to function

Author: jlatusek

src/tools/spake2p/Cmd_GenVerifier.cpp

@@ -159,9 +159,8 @@ uint8_t gSalt[BASE64_MAX_DECODED_LEN(BASE64_ENCODED_LEN(kSpake2p_Max_PBKDF_Salt_
 uint8_t gSaltDecodedLen   = 0;
 uint8_t gSaltLen          = 0;
 const char * gOutFileName = nullptr;
-std::ifstream gPinCodeFile;
 
-static uint32_t GetNextPinCode()
+static uint32_t GetNextPinCode(std::ifstream & gPinCodeFile)
 {
     if (!gPinCodeFile.is_open())
     {
@@ -207,13 +206,14 @@ bool HandleOption(const char * progName, OptionSet * optSet, int id, const char
         break;
 
     case 'f':
+        std::ifstream gPinCodeFile;
         gPinCodeFile.open(arg, std::ios::in);
         if (gPinCodeFile.fail())
         {
             PrintArgError("%s: Failed to open the PIN code file: %s\n", progName, arg);
             return false;
         }
-        gPinCode = GetNextPinCode();
+        gPinCode = GetNextPinCode(gPinCodeFile);
         gPinCodeFile.close();
         break;