LibIMAP+Mail: Rename MultiPartBody's mime_type to multipart_subtype

Userland/Applications/Mail/MailWidget.cpp

@@ -185,7 +185,7 @@ void MailWidget::on_window_close()
 
 IMAP::MultiPartBodyStructureData const* MailWidget::look_for_alternative_body_structure(IMAP::MultiPartBodyStructureData const& current_body_structure, Vector<u32>& position_stack) const
 {
-    if (current_body_structure.media_type.equals_ignoring_ascii_case("ALTERNATIVE"sv))
+    if (current_body_structure.multipart_subtype.equals_ignoring_ascii_case("ALTERNATIVE"sv))
         return &current_body_structure;
 
     u32 structure_index = 1;

Userland/Libraries/LibIMAP/Objects.h

@@ -198,7 +198,7 @@ struct MultiPartBodyStructureData {
     Optional<Tuple<DeprecatedString, HashMap<DeprecatedString, DeprecatedString>>> disposition;
     Vector<OwnPtr<BodyStructure>> bodies;
     Vector<DeprecatedString> langs;
-    DeprecatedString media_type;
+    DeprecatedString multipart_subtype;
     Optional<HashMap<DeprecatedString, DeprecatedString>> params;
     Optional<DeprecatedString> location;
     Optional<Vector<BodyExtension>> extensions;

Userland/Libraries/LibIMAP/Parser.cpp

@@ -384,7 +384,7 @@ BodyStructure Parser::parse_body_structure()
             data.bodies.append(make<BodyStructure>(move(child)));
         }
         consume(" "sv);
-        data.media_type = parse_string();
+        data.multipart_subtype = parse_string();
 
         if (!try_consume(")"sv)) {
             consume(" "sv);