Fix warnings of -Wall -Wextra

1 files changed, 1 insertions, 2 deletions

diff --git a/testing/misc_tools.c b/testing/misc_tools.c
index 81f5ed8a..d05c88f6 100644
--- a/testing/misc_tools.c
+++ b/testing/misc_tools.c
@@ -36,10 +36,9 @@
 /* TODO: rewrite */
 unsigned char *hex_string_to_bin(char hex_string[])
 {
-    size_t len = strlen(hex_string);
+    size_t i, len = strlen(hex_string);
     unsigned char *val = malloc(len);
     char *pos = hex_string;
-    int i;
 
     for (i = 0; i < len; ++i, pos += 2)
         sscanf(pos, "%2hhx", &val[i]);