make fCommandLine a local variable in AppInit()

src/bitcoind.cpp

@@ -69,6 +69,7 @@ bool AppInit(int argc, char* argv[])
         }
 
         // Command-line RPC
+        bool fCommandLine = false;
         for (int i = 1; i < argc; i++)
             if (!IsSwitchChar(argv[i][0]) && !boost::algorithm::istarts_with(argv[i], "bitcoin:"))
                 fCommandLine = true;