Fixed some warnings

src/libs/services/scanner/impl/steps/ScanStepScanFiles.hpp

@@ -28,7 +28,7 @@
 namespace lms::scanner
 {
     class IFileScanner;
-    class MediaLibraryInfo;
+    struct MediaLibraryInfo;
 
     class ScanStepScanFiles : public ScanStepBase
     {

src/libs/services/scanner/impl/steps/ScanStepUpdateLibraryFields.hpp

@@ -23,7 +23,7 @@
 
 namespace lms::scanner
 {
-    class MediaLibraryInfo;
+    struct MediaLibraryInfo;
 
     class ScanStepUpdateLibraryFields : public ScanStepBase
     {

src/libs/subsonic/impl/endpoints/MediaRetrieval.hpp

@@ -26,7 +26,7 @@
 
 namespace lms::api::subsonic
 {
-    class RequestContext;
+    struct RequestContext;
 
     Response handleGetLyrics(RequestContext& context);
     Response handleGetLyricsBySongId(RequestContext& context);