[test.gtest] disable warnings inside

dune/stuff/test/gtest/gtest.h

@@ -51,6 +51,8 @@
 #ifndef GTEST_INCLUDE_GTEST_GTEST_H_
 #define GTEST_INCLUDE_GTEST_GTEST_H_
+#include <dune/stuff/common/disable_warnings.hh>
+
 #include <limits>
 #include <vector>
@@ -19534,4 +19536,6 @@ bool StaticAssertTypeEq() {
 }  // namespace testing
+#include <dune/stuff/common/reenable_warnings.hh>
+
 #endif  // GTEST_INCLUDE_GTEST_GTEST_H_

dune/stuff/test/main.hxx

@@ -15,8 +15,6 @@
 #include <fstream>
 
 #include <dune/stuff/common/disable_warnings.hh>
-#include <dune/stuff/test/gtest/gtest.h>
-
 #include <dune/common/float_cmp.hh>
 #include <dune/common/fvector.hh>
 #include <dune/common/fmatrix.hh>
@@ -27,6 +25,7 @@
 #endif
 #include <dune/stuff/common/reenable_warnings.hh>
 
+#include <dune/stuff/test/gtest/gtest.h>
 #include <dune/stuff/aliases.hh>
 #include <dune/stuff/common/configuration.hh>
 #include <dune/stuff/common/logging.hh>

dune/stuff/test/main_header.cxx

@@ -7,9 +7,7 @@
 
 #include <sys/time.h>
 
-#include <dune/stuff/common/disable_warnings.hh>
 #include <dune/stuff/test/gtest/gtest.h>
-#include <dune/stuff/common/reenable_warnings.hh>
 
 #include "main_header.hh"