Fixed bug in the scan settings view when no extra tag is to be parsed

src/libs/core/test/String.cpp

@@ -78,6 +78,7 @@ namespace lms::core::stringUtils::tests
         };
 
         TestCase tests[]{
+            { "", "", { "" } },
             { "abc", "", { "abc" } },
             { "abc", "-", { "abc" } },
             { "abc", "b", { "a", "c" } },

src/libs/database/impl/ScanSettings.cpp

@@ -59,7 +59,11 @@ namespace lms::db
 
     std::vector<std::string_view> ScanSettings::getExtraTagsToScan() const
     {
-        return core::stringUtils::splitString(_extraTagsToScan, ';');
+        std::vector<std::string_view> tags{ core::stringUtils::splitString(_extraTagsToScan, ';') };
+        if (tags.size() == 1 && tags.front().empty())
+            tags.clear();
+
+        return tags;
     }
 
     std::vector<std::string> ScanSettings::getArtistTagDelimiters() const