Undef DELETE macro on Windows (#8497)

src/google/protobuf/port_def.inc

@@ -436,6 +436,8 @@
 #ifdef _MSC_VER
 #pragma push_macro("CREATE_NEW")
 #undef CREATE_NEW
+#pragma push_macro("DELETE")
+#undef DELETE
 #pragma push_macro("DOUBLE_CLICK")
 #undef DOUBLE_CLICK
 #pragma push_macro("ERROR")

src/google/protobuf/port_undef.inc

@@ -86,6 +86,7 @@
 // Restore macro that may have been #undef'd in port_def.inc.
 #ifdef _MSC_VER
 #pragma pop_macro("CREATE_NEW")
+#pragma pop_macro("DELETE")
 #pragma pop_macro("DOUBLE_CLICK")
 #pragma pop_macro("ERROR")
 #pragma pop_macro("ERROR_BUSY")