Remove MSVC2012-optimization for the QMetaType-test.

As otherwise compilation takes hours.

Task-number: QTBUG-28611
Change-Id: I0ad73bf6ea4d7d4594e902c101bf52969daca341
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>

tests/auto/corelib/kernel/qmetatype/qmetatype.pro

@@ -5,7 +5,12 @@ SOURCES = tst_qmetatype.cpp
 TESTDATA=./typeFlags.bin
 DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0
 
-win32-msvc2008 {
+win32-msvc* {
     # Prevents "fatal error C1128: number of sections exceeded object file format limit".
     QMAKE_CXXFLAGS += /bigobj
-}
+    # Reduce compile time
+    win32-msvc2012 {
+        QMAKE_CXXFLAGS_RELEASE -= -O2
+        QMAKE_CFLAGS_RELEASE -= -O2
+    }
+}