clients/lib: cast memchr() return value to non-const

  strings.c: In function 'memchr':
  strings.c:196:11: warning: return discards 'const' qualifier from pointer
      target type [-Wdiscarded-qualifiers]
    196 |    return p;
        |           ^

1 files changed, 1 insertions, 1 deletions

diff --git a/clients/lib/strings.c b/clients/lib/strings.c
index c72cf222..eba3f71c 100644
--- a/clients/lib/strings.c
+++ b/clients/lib/strings.c
@@ -193,7 +193,7 @@ void *memchr(const void *s, int c, size_t len)
 	const unsigned char *p = s;
 	while (len--) {
 		if (*p == (unsigned char)c)
-			return p;
+			return (void *)p;
 		p++;
 	}
 	return NULL;