CodeQL: Potentially uninitialized local variable

This is not really uninitialized, it would only happen if the string
dumped with dump_string was empty of contained invalid UTF-8. Setting
an initial value has no effect since codepoint is used as an "out"
value in utf8_iterate.

src/jansson/src/dump.c

@@ -69,7 +69,7 @@ static int dump_indent(size_t flags, int depth, int space, dump_func dump, void
 static int dump_string(const char *str, int ascii, dump_func dump, void *data)
 {
     const char *pos, *end;
-    int32_t codepoint;
+    int32_t codepoint = 0;
 
     if(dump("\"", 1, data))
         return -1;