dbghelp: Fix container for global variables (Dwarf).

dlls/dbghelp/dwarf.c

@@ -1997,7 +1997,8 @@ static void dwarf2_parse_variable(dwarf2_subprogram_t* subpgm,
             if (!dwarf2_find_attribute(di, DW_AT_external, &ext))
                 ext.u.uvalue = 0;
             loc.offset += subpgm->ctx->module_ctx->load_offset;
-            symt_new_global_variable(subpgm->ctx->module_ctx->module, subpgm->ctx->compiland,
+            symt_new_global_variable(subpgm->ctx->module_ctx->module,
+                                     ext.u.uvalue ? NULL : subpgm->ctx->compiland,
                                      dwarf2_get_cpp_name(di, name.u.string), !ext.u.uvalue,
                                      loc, 0, param_type);
             break;