[fix][arch] crashing while reading the installed packages when the internet is unstable

CHANGELOG.md

@@ -55,6 +55,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Fixes
 - Flatpak
     - not displaying application updates on the search results
+- Arch
+    - crashing while reading the installed packages when the internet is unstable
 
 - initialization dialog hangs when there is no task to wait for [#112](https://github.com/vinifmor/bauh/issues/112)
 - not caching data of repository packages with unknown repository names

bauh/gems/arch/aur.py

@@ -185,6 +185,7 @@ class AURClient:
                     return pkgnames
                 else:
                     self.logger.warning("Could not load AUR index on the context")
+                    return set()
             else:
                 return index.values()
         except: