Reverted changes to catch.hpp

test/catch.hpp

@@ -10280,7 +10280,7 @@ namespace Catch {
 #ifndef __OBJC__
 
 // Standard C/C++ main entry point
-int main (int argc, const char * argv[]) {
+int main (int argc, char * argv[]) {
     return Catch::Session().run( argc, argv );
 }