Fixed ignoring the umask mount option when permissions are used

When permissions are used, umask(2) is supposed to be active and the
umask mount option is supposed to be ignored, but it was still wrongly
applied. This caused permission restrictions when an external disk was
automatically mounted with standard options.

src/lowntfs-3g.c

@@ -4058,6 +4058,7 @@ int main(int argc, char *argv[])
 		}
 		permissions_mode = "User mapping built";
 #endif /* POSIXACLS */
+		ctx->dmask = ctx->fmask = 0;
 	} else {
 		ctx->security.uid = ctx->uid;
 		ctx->security.gid = ctx->gid;

src/ntfs-3g.c

@@ -3903,6 +3903,7 @@ int main(int argc, char *argv[])
 #endif /* KERNELPERMS */
 		permissions_mode = "User mapping built";
 #endif /* POSIXACLS */
+		ctx->dmask = ctx->fmask = 0;
 	} else {
 		ctx->security.uid = ctx->uid;
 		ctx->security.gid = ctx->gid;