mirror: apparently the 'icons' dir does not always exist

https://apt.izzysoft.de/fdroid/archive/com.futsch1.medtimer_28.apk:
2024-04-21 18:55:20 ERROR 404: Not Found.
https://apt.izzysoft.de/fdroid/archive/com.hardbacknutter.nevertoomanybooks_75.apk:
2024-04-21 18:55:20 ERROR 404: Not Found.
https://apt.izzysoft.de/fdroid/archive/com.jovial.jrpn15_20.apk:
2024-04-21 18:55:20 ERROR 404: Not Found.
https://apt.izzysoft.de/fdroid/archive/com.jovial.jrpn2_20.apk:
2024-04-21 18:55:20 ERROR 404: Not Found.
https://apt.izzysoft.de/fdroid/archive/com.logger.app_8.apk:
2024-04-21 18:55:21 ERROR 404: Not Found.
https://apt.izzysoft.de/fdroid/archive/com.lorenzovainigli.foodexpirationdates.foss_22.apk:
2024-04-21 18:55:21 ERROR 404: Not Found.
https://apt.izzysoft.de/fdroid/archive/com.openathena_36.apk:
2024-04-21 18:55:21 ERROR 404: Not Found.
https://apt.izzysoft.de/fdroid/archive/com.oppzippy.openscq30_21.apk:
2024-04-21 18:55:21 ERROR 404: Not Found.
https://apt.izzysoft.de/fdroid/archive/com.sanmer.mrepo_713.apk:
2024-04-21 18:55:21 ERROR 404: Not Found.
https://apt.izzysoft.de/fdroid/archive/com.starry.myne_325.apk:
2024-04-21 18:55:21 ERROR 404: Not Found.
https://apt.izzysoft.de/fdroid/archive/dev.imranr.obtainium_22602.apk:
2024-04-21 18:55:22 ERROR 404: Not Found.
https://apt.izzysoft.de/fdroid/archive/dev.sanmer.pi_137.apk:
2024-04-21 18:55:22 ERROR 404: Not Found.
https://apt.izzysoft.de/fdroid/archive/org.breezyweather_50108.apk:
2024-04-21 18:55:22 ERROR 404: Not Found.
2024-04-21 18:55:22,448 ERROR: no "icon" in org.breezyweather
2024-04-21 18:55:22,449 ERROR: no "icon" in com.lorenzovainigli.foodexpirationdates.foss
2024-04-21 18:55:22,449 ERROR: no "icon" in com.jovial.jrpn15
2024-04-21 18:55:22,450 ERROR: no "icon" in com.jovial.jrpn2
2024-04-21 18:55:22,450 ERROR: no "icon" in com.logger.app
2024-04-21 18:55:22,450 ERROR: no "icon" in com.futsch1.medtimer
2024-04-21 18:55:22,451 ERROR: no "icon" in com.sanmer.mrepo
2024-04-21 18:55:22,451 ERROR: no "icon" in com.starry.myne
2024-04-21 18:55:22,451 ERROR: no "icon" in com.hardbacknutter.nevertoomanybooks
2024-04-21 18:55:22,452 ERROR: no "icon" in dev.imranr.obtainium
2024-04-21 18:55:22,452 ERROR: no "icon" in com.openathena
2024-04-21 18:55:22,453 ERROR: no "icon" in com.oppzippy.openscq30
2024-04-21 18:55:22,453 ERROR: no "icon" in dev.sanmer.pi
2024-04-21 18:55:22,454 CRITICAL: Unknown exception found!
Traceback (most recent call last):
  File "/home/fdroid/code/fdroid/fdroidserver/fdroid", line 22, in <module>
    fdroidserver.__main__.main()
  File "/home/fdroid/code/fdroid/fdroidserver/fdroidserver/__main__.py", line 230, in main
    raise e
  File "/home/fdroid/code/fdroid/fdroidserver/fdroidserver/__main__.py", line 211, in main
    mod.main()
  File "/home/fdroid/code/fdroid/fdroidserver/fdroidserver/mirror.py", line 269, in main
    _run_wget(os.path.join(basedir, section, icondir), urls[icondir])
KeyError: 'icons'

fdroidserver/mirror.py

@@ -268,7 +268,8 @@ def main():
                 urls[icondir].append(url)
 
         for icondir in icondirs:
-            _run_wget(os.path.join(basedir, section, icondir), urls[icondir])
+            if icondir in urls:
+                _run_wget(os.path.join(basedir, section, icondir), urls[icondir])
 
 
 if __name__ == "__main__":