Let mount_osxfuse create mount point

In macOS 10.12 the permissions of the root-owned /Volumes directory
have changed from 1777 (rwxrwxrwt) to 1755 (rwxr-xr-t). As a result
admin privileges are required to create mount points in /Volumes.

In order to allow non-admin users to mount FUSE volumes in /Volumes
mount_osxfuse will create non-existent mount points.

lib/helper.c

@@ -8,7 +8,7 @@
 
 /*
  * Copyright (c) 2006-2008 Amit Singh/Google Inc.
- * Copyright (c) 2011-2012 Benjamin Fleischer
+ * Copyright (c) 2011-2016 Benjamin Fleischer
  */
 
 #include "config.h"
@@ -120,28 +120,16 @@ static int fuse_helper_opt_proc(void *data, const char *arg, int key,
 		if (!hopts->mountpoint) {
 			char mountpoint[PATH_MAX];
 			if (realpath(arg, mountpoint) == NULL) {
+#ifdef __APPLE__
+				return fuse_opt_add_opt(&hopts->mountpoint,
+							arg);
+#else /* !__APPLE__ */
 				fprintf(stderr,
 					"fuse: bad mount point `%s': %s\n",
 					arg, strerror(errno));
 				return -1;
+#endif /* !__APPLE__ */
 			}
-#ifdef __APPLE__
-			else {
-				struct stat sb;
-				if (stat(mountpoint, &sb) != 0) {
-					fprintf(stderr,
-						"fuse: failed to stat mount point `%s': %s\n",
-						mountpoint, strerror(errno));
-					return -1;
-				}
-				if ((sb.st_mode & S_IFMT) != S_IFDIR) {
-					fprintf(stderr,
-						"fuse: mount point is not a directory `%s'\n",
-						mountpoint);
-					return -1;
-				}
-			}
-#endif
 			return fuse_opt_add_opt(&hopts->mountpoint, mountpoint);
 		} else {
 			fprintf(stderr, "fuse: invalid argument `%s'\n", arg);