Promote more debug-only assertions to regular assertions.

llvm-svn: 355569
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
index 05cc4ef..61c270f 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
@@ -2843,7 +2843,7 @@
     if (decl_ctx_die1.Tag() != decl_ctx_die2.Tag())
       return false;
   }
-#if defined LLDB_CONFIGURATION_DEBUG
+#ifndef NDEBUG
 
   // Make sure the top item in the decl context die array is always
   // DW_TAG_compile_unit or DW_TAG_partial_unit. If it isn't then