[PATCH 1/3] Fix null dereference in src/main.c

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str could be null when dst isn't null
---
 src/main.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/main.c b/src/main.c
index 2d24d07..3ad9048 100644
--- a/src/main.c
+++ b/src/main.c
@@ -266,7 +266,7 @@ static char *expand_name(char *dst, int size, char *str, int dev_id)
 	register int sp, np, olen;
 	char *opt, buf[10];
 
-	if (!str && !dst)
+	if (!str || !dst)
 		return NULL;
 
 	sp = np = 0;
-- 
1.6.0.6

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