Moved _strtoi to common, strtoi_range

src/common.h

@@ -111,6 +111,7 @@ gboolean mkdir_recursive(const char *dir);
 char * str_replace(const char *string, const char *substr,
     const char *replacement);
 int str_contains(const char str[], int size, char ch);
+gboolean strtoi_range(char *str, int *saveptr, int min, int max, char **err_msg);
 int utf8_display_len(const char * const str);
 gboolean utf8_is_printable(const wint_t ch);
 char * prof_getline(FILE *stream);