[PATCH] block/curl: explicitly assert that strchr returns non-NULL value

[Vladimir Sementsov-Ogievskiy]

strchr may return NULL if colon is not found. It seems clearer to
assert explicitly that we don't expect it here, than dereference 1 in
the next line.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
---
 block/curl.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/block/curl.c b/block/curl.c
index 419f7c89ef..ccfffd6c12 100644
--- a/block/curl.c
+++ b/block/curl.c
@@ -219,7 +219,9 @@ static size_t curl_header_cb(void *ptr, size_t size, size_t 
nmemb, void *opaque)
         && g_ascii_strncasecmp(header, accept_ranges,
                                strlen(accept_ranges)) == 0) {
 
-        char *p = strchr(header, ':') + 1;
+        char *p = strchr(header, ':');
+        assert(p != NULL);
+        p += 1;
 
         /* Skip whitespace between the header name and value. */
         while (p < end && *p && g_ascii_isspace(*p)) {
-- 
2.34.1