AK: Use east const in MappedFile

Author: https://github.com/timmot
Commit: https://github.com/SerenityOS/serenity/commit/62af82f494a
Pull-request: https://github.com/SerenityOS/serenity/pull/9229

AK/MappedFile.cpp

@@ -15,7 +15,7 @@
 
 namespace AK {
 
-Result<NonnullRefPtr<MappedFile>, OSError> MappedFile::map(const String& path)
+Result<NonnullRefPtr<MappedFile>, OSError> MappedFile::map(String const& path)
 {
     int fd = open(path.characters(), O_RDONLY | O_CLOEXEC, 0);
     if (fd < 0)

AK/MappedFile.h

@@ -19,7 +19,7 @@ class MappedFile : public RefCounted<MappedFile> {
     AK_MAKE_NONMOVABLE(MappedFile);
 
 public:
-    static Result<NonnullRefPtr<MappedFile>, OSError> map(const String& path);
+    static Result<NonnullRefPtr<MappedFile>, OSError> map(String const& path);
     static Result<NonnullRefPtr<MappedFile>, OSError> map_from_fd_and_close(int fd, String const& path);
     ~MappedFile();