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-rw-r--r--package/wprobe/src/user/wprobe-lib.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/package/wprobe/src/user/wprobe-lib.c b/package/wprobe/src/user/wprobe-lib.c
index a3b0fb5e5e..a1a52f2054 100644
--- a/package/wprobe/src/user/wprobe-lib.c
+++ b/package/wprobe/src/user/wprobe-lib.c
@@ -795,7 +795,8 @@ wprobe_get_auto(const char *arg, char **err)
free(devstr);
return wprobe_get_dev(arg);
#else
- *err = "Invalid argument";
+ if (err)
+ *err = "Invalid argument";
goto out;
#endif
}