loplugin:empty

Change-Id: Ib52d0d4db0f50ba7551eadcb3db2920008596b59
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/132761
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

setup_native/source/win32/customactions/sellang/sellang.cxx

@@ -49,7 +49,7 @@ static bool GetMsiPropA( MSIHANDLE hMSI, const char* pPropName, char** ppValue )
         ZeroMemory( buff, nbytes );
         MsiGetPropertyA( hMSI, pPropName, buff, &sz );
         *ppValue = buff;
-        return ( strlen(buff) > 0 );
+        return ( buff[0] != '\0' );
     }
     return false;
 }