std.cfg: Do not take the return value of std::locale::global() into account.

Author: orbitcowboy

cfg/std.cfg

@@ -4898,9 +4898,8 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <noreturn>false</noreturn>
     <leak-ignore/>
   </function>
-  <!-- static std::locale std::locale::global( const locale& loc ); -->
+  <!-- static std::locale std::locale::global( const std::locale& loc ); -->
   <function name="std::locale::global">
-    <use-retval/>
     <returnValue type="struct std::locale"/>
     <noreturn>false</noreturn>
     <leak-ignore/>

test/cfg/std.cpp

@@ -3071,6 +3071,12 @@ void ignoredReturnValue_string_compare(std::string teststr, std::wstring testwst
     testwstr.compare(L"wtest");
 }
 
+void ignoredReturnValue_locale_global(const std::locale& loc)
+{
+    // no ignoredReturnValue shall be shown for
+    std::locale::global(loc);
+}
+
 void ignoredReturnValue_make_pair()
 {
     // cppcheck-suppress ignoredReturnValue