* release version), based on the git version number.
*
*/
-bool is_debug_build() {
+bool is_debug_build(void) {
/* i3_version contains either something like this:
* "4.0.2 (2011-11-11, branch "release")".
* or: "4.0.2-123-gCOFFEEBABE (2011-11-11, branch "next")".