Ignore corrupted source data (microsoft#4291)

Rather than a failure here, we will treat corrupt source data as simply
empty. The only recourse the user currently has is to delete it anyway,
and COM callers have no means to mitigate it.

src/AppInstallerCLITests/Sources.cpp

@@ -312,14 +312,14 @@ TEST_CASE("RepoSources_InvalidYAML", "[sources]")
 {
     SetSetting(Stream::UserSources, "Name: Value : BAD");
 
-    REQUIRE_THROWS_HR(GetSources(), APPINSTALLER_CLI_ERROR_SOURCES_INVALID);
+    REQUIRE_NOTHROW(GetSources());
 }
 
 TEST_CASE("RepoSources_MissingField", "[sources]")
 {
     SetSetting(Stream::UserSources, s_SingleSource_MissingArg);
 
-    REQUIRE_THROWS_HR(GetSources(), APPINSTALLER_CLI_ERROR_SOURCES_INVALID);
+    REQUIRE_NOTHROW(GetSources());
 }
 
 TEST_CASE("RepoSources_AddSource", "[sources]")
@@ -1300,4 +1300,4 @@ TEST_CASE("RepoSources_BuiltInDesktopFrameworkSourceAlwaysCreatable", "[sources]
 {
     Source source(WellKnownSource::DesktopFrameworks);
     REQUIRE(source);
-}
+}

src/AppInstallerRepositoryCore/SourceList.cpp

@@ -145,7 +145,10 @@ namespace AppInstaller::Repository
             else
             {
                 std::vector<SourceDetailsInternal> result;
-                THROW_HR_IF(APPINSTALLER_CLI_ERROR_SOURCES_INVALID, !TryReadSourceDetails(setting.GetName(), *sourcesStream, rootName, parse, result));
+                if (!TryReadSourceDetails(setting.GetName(), *sourcesStream, rootName, parse, result))
+                {
+                    AICLI_LOG(YAML, Error, << "Ignoring corrupted source data.");
+                }
                 return result;
             }
         }