Explicitly cast the trampoline prototype to IMP

Summary: public

Add explicitly cast to the trampoline prototype to silence warnings.

Reviewed By: javache

Differential Revision: D2605779

fb-gh-sync-id: e208b69236c1b87bb1374ee493840ea5f47b371c

React/Profiler/RCTProfile.m

@@ -241,7 +241,7 @@ void RCTProfileHookModules(RCTBridge *bridge)
         }
         const char *types = method_getTypeEncoding(method);
 
-        class_addMethod(proxyClass, selector, RCTProfileTrampoline, types);
+        class_addMethod(proxyClass, selector, (IMP)RCTProfileTrampoline, types);
       }
       free(methods);