Two more small changes for CI.

src/lib/log/util_bug.c

@@ -17,6 +17,8 @@
 #include "lib/malloc/util_malloc.h"
 #include "lib/string/printf.h"
 
+#include <string.h>
+
 #ifdef __COVERITY__
 int bug_macro_deadcode_dummy__ = 0;
 #endif

src/lib/string/compat_ctype.h

@@ -31,6 +31,8 @@ extern const uint8_t TOR_TOLOWER_TABLE[];
 #define TOR_TOLOWER(c) (TOR_TOLOWER_TABLE[(uint8_t)c])
 #define TOR_TOUPPER(c) (TOR_TOUPPER_TABLE[(uint8_t)c])
 
+inline int hex_decode_digit(char c);
+
 /** Helper: given a hex digit, return its value, or -1 if it isn't hex. */
 inline int
 hex_decode_digit(char c)