LibDebug: Move get_die_at_offset to Dwarf::CompilationUnit

Author: https://github.com/itamar8910
Commit: fea9bb8c51
Pull-request: https://github.com/SerenityOS/serenity/pull/8149
Reviewed-by: https://github.com/gunnarbeutner

Userland/Libraries/LibDebug/Dwarf/CompilationUnit.cpp

@@ -23,4 +23,10 @@ DIE CompilationUnit::root_die() const
     return DIE(*this, m_offset + m_header.header_size());
 }
 
+DIE CompilationUnit::get_die_at_offset(u32 die_offset) const
+{
+    VERIFY(die_offset >= offset() && die_offset < offset() + size());
+    return DIE(*this, die_offset);
+}
+
 }