Compile fix for literals

Change-Id: I874803659543003dca9db14cd9b05f79da7ea19c
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/qmlprojectmanager/qmlprojectconstants.h

@@ -36,7 +36,7 @@ namespace QmlProjectManager {
 namespace Constants {
 
 const char PROJECTCONTEXT[]     = "QmlProject.ProjectContext";
-const char QMLPROJECT_MIMETYPE[]        = QmlJSTools::Constants::QMLPROJECT_MIMETYPE;
+static const char *QMLPROJECT_MIMETYPE = QmlJSTools::Constants::QMLPROJECT_MIMETYPE;
 
 } // namespace Constants
 } // namespace QmlProjectManager