Change type on variable to silence gcc 4 warning. Call signature was found at

http://darwinsource.opendarwin.org/10.4.2/dyld-43.1/src/dyldAPIs.cpp .

Modules/getpath.c

@@ -381,7 +381,7 @@ calculate_path(void)
     NSModule pythonModule;
 #endif
 #ifdef __APPLE__
-    unsigned long nsexeclength = MAXPATHLEN;
+    uint32_t nsexeclength = MAXPATHLEN;
 #endif
 
 	/* If there is no slash in the argv0 path, then we have to