There's no need to close an invalid FILE*

Android doesn't have /proc/modules, and darling segfaults instead of
reporting errors elegantly. On BioniC, fclose(NULL) leads to SIGSEGV.

a8f9c8069e/libc/stdio/stdio.cpp (374)

src/startup/darling.c

@@ -893,7 +893,6 @@ int isModuleLoaded()
 	if ((fp = fopen("/proc/modules", "r")) == NULL)
 	{
 		fprintf(stderr, "Failure opening /proc/modules: %s\n", strerror(errno));
-		fclose(fp);
 		return 0;
 	}