Remove an exit-time destructor from a frequently-included header.

src/common/angleutils.h

@@ -150,14 +150,15 @@ inline bool IsMaskFlagSet(T mask, T flag)
 
 inline const char *MakeStaticString(const std::string &str)
 {
-    static std::set<std::string> strings;
-    std::set<std::string>::iterator it = strings.find(str);
-    if (it != strings.end())
+    // On the heap so that no destructor runs on application exit.
+    static std::set<std::string> *strings = new std::set<std::string>;
+    std::set<std::string>::iterator it = strings->find(str);
+    if (it != strings->end())
     {
         return it->c_str();
     }
 
-    return strings.insert(str).first->c_str();
+    return strings->insert(str).first->c_str();
 }
 
 std::string ArrayString(unsigned int i);