Created attachment 5478 Patch for uninitialized 'count' variable. migrate_config_strchr_count should initialize count disregarding if haystack is null, as it is its return value. I attach a simple fix.
Mario Rugiero referenced this bugreport in commit a6bd44d8d4de549b06debb3a6ebb045bf3c00186 Correctly initialize return value (Bug #10873) https://git.xfce.org/xfce/xfce4-panel/commit?id=a6bd44d8d4de549b06debb3a6ebb045bf3c00186
Thanks, that makes a lot of sense.