TcpPortsGatherer: Fix compilation with latest MinGW-32

Latest MinGW uses gcc 4.7.1 , but still hasn't the structures defined.

Change-Id: I90c4c0a10d38488c7f3347830391489032a98328
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

src/libs/utils/tcpportsgatherer.cpp

@@ -45,8 +45,8 @@
 
 #if defined(Q_OS_WIN) && defined(Q_CC_MINGW)
 
-// Missing declarations for MinGW. This requires MinGW with gcc 4.6.
-#if __GNUC__ == 4 && __GNUC_MINOR__ < 7 && (!defined(__MINGW64_VERSION_MAJOR) || __MINGW64_VERSION_MAJOR < 2)
+// Missing declarations for MinGW 32.
+#if __GNUC__ == 4 && (!defined(__MINGW64_VERSION_MAJOR) || __MINGW64_VERSION_MAJOR < 2)
 typedef enum { } MIB_TCP_STATE;
 #endif