Kernel: Add some implied auto qualifiers

Author: https://github.com/Hendiadyoin1
Commit: 04d75f4ff9
Pull-request: https://github.com/SerenityOS/serenity/pull/11475

Kernel/Panic.cpp

@@ -27,7 +27,7 @@ namespace Kernel {
 void __panic(const char* file, unsigned int line, const char* function)
 {
     // Avoid lock ranking checks on crashing paths, just try to get some debugging messages out.
-    auto thread = Thread::current();
+    auto* thread = Thread::current();
     if (thread)
         thread->set_crashing();