[U-Boot] [PATCH] env: don't add an empty key to the env hashtable

[Lucian Cojocar]

If the environment contains an entry like "=value" "\0" we should skip
this key/value. Otherwise, U-Boot will enter in an infinite loop.

Signed-off-by: Lucian Cojocar <cojocar at gmail.com>
---
 lib/hashtable.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/hashtable.c b/lib/hashtable.c
index 07ebfb2..8f5a6f8 100644
--- a/lib/hashtable.c
+++ b/lib/hashtable.c
@@ -870,6 +870,10 @@ int himport_r(struct hsearch_data *htab,
 		*sp++ = '\0';	/* terminate value */
 		++dp;
 
+		/* skip this entry if the name is empty */
+		if (*name == 0)
+			continue;
+
 		/* Skip variables which are not supposed to be processed */
 		if (!drop_var_from_set(name, nvars, localvars))
 			continue;
-- 
1.7.9.5