Auto tests: Fix some MSVC warnings about integer conversions

Change-Id: Ibab8028ccdb9a4b02cadc6d2e85e8a0472f0d96f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

tests/auto/corelib/tools/collections/tst_collections.cpp

@@ -2962,7 +2962,7 @@ public:
 
     inline bool operator==(const AlignedClass &other) const { return i == other.i; }
     inline bool operator<(const AlignedClass &other) const { return i < other.i; }
-    friend inline int qHash(const AlignedClass &a) { return qHash(a.i); }
+    friend inline size_t qHash(const AlignedClass &a) { return qHash(a.i); }
 };
 
 using Aligned4 = AlignedClass<4>;

tests/auto/testlib/selftests/counting/tst_counting.cpp

@@ -292,7 +292,7 @@ int main(int argc, char *argv[])
 #ifdef TESTLIB_VERBOSITY_ARG
     std::vector<const char*> args(argv, argv + argc);
     args.push_back(QT_STRINGIFY(TESTLIB_VERBOSITY_ARG));
-    argc = args.size();
+    argc = int(args.size());
     argv = const_cast<char**>(&args[0]);
 #endif
 

tests/auto/testlib/selftests/printdatatags/tst_printdatatags.cpp

@@ -76,7 +76,7 @@ int main(int argc, char *argv[])
 {
     std::vector<const char*> args(argv, argv + argc);
     args.push_back("-datatags");
-    argc = args.size();
+    argc = int(args.size());
     argv = const_cast<char**>(&args[0]);
 
     QTEST_MAIN_IMPL(tst_PrintDataTags)

tests/auto/testlib/selftests/printdatatagswithglobaltags/tst_printdatatagswithglobaltags.cpp

@@ -92,7 +92,7 @@ int main(int argc, char *argv[])
 {
     std::vector<const char*> args(argv, argv + argc);
     args.push_back("-datatags");
-    argc = args.size();
+    argc = int(args.size());
     argv = const_cast<char**>(&args[0]);
 
     QTEST_MAIN_IMPL(tst_PrintDataTagsWithGlobalTags)

tests/auto/testlib/selftests/signaldumper/tst_signaldumper.cpp

@@ -428,7 +428,7 @@ int main(int argc, char *argv[])
 {
     std::vector<const char*> args(argv, argv + argc);
     args.push_back("-vs");
-    argc = args.size();
+    argc = int(args.size());
     argv = const_cast<char**>(&args[0]);
 
     QTEST_MAIN_IMPL(tst_Signaldumper)

tests/auto/testlib/selftests/silent/tst_silent.cpp

@@ -106,7 +106,7 @@ int main(int argc, char *argv[])
 {
     std::vector<const char*> args(argv, argv + argc);
     args.push_back("-silent");
-    argc = args.size();
+    argc = int(args.size());
     argv = const_cast<char**>(&args[0]);
 
     QTEST_MAIN_IMPL(tst_Silent)

tests/auto/testlib/selftests/tst_selftests.cpp

@@ -1220,7 +1220,7 @@ int main(int argc, char **argv)
             rebaseMode = RebaseAll;
 
         args.erase(rebaseArgument);
-        argc = args.size();
+        argc = int(args.size());
         argv = const_cast<char**>(&args[0]);
     }