swift_reflection_info_t: Fix inversion of assocty and builtin reflection sections

Author: bitjammer

include/swift/SwiftRemoteMirror/SwiftRemoteMirrorTypes.h

@@ -36,8 +36,8 @@ typedef struct swift_reflection_section {
 /// Not all sections may be present.
 typedef struct swift_reflection_info {
   swift_reflection_section_t fieldmd;
-  swift_reflection_section_t builtin;
   swift_reflection_section_t assocty;
+  swift_reflection_section_t builtin;
   swift_reflection_section_t capture;
   swift_reflection_section_t typeref;
   swift_reflection_section_t reflstr;