Fix Coverity issues

• Fix remaining coverity issues

src/core/Core.cpp

@@ -272,7 +272,7 @@ int Core::get_options(int &argc, char **argv)
 
     /* Ignore any -psn_%d_%d argument, which is Mac OS specific */
     largc = 0;
-    largv = (char**)calloc(argc+1, sizeof(char**));
+    largv = (char**)calloc(argc+1, sizeof(char*));
     for(c = 0; c < argc; c++) {
         if( strncmp(argv[c], "-psn", 4) )
             largv[largc++] = argv[c];