db: move db_field_log dtor out of union

modules/database/test/ioc/db/chfPluginTest.c

@@ -302,7 +302,7 @@ static db_field_log * pre(void *user, dbChannel *chan, db_field_log *pLog) {
     pLog->field_type++;
 
     if (my->offpre == 0) {  /* The first one registers a dtor and saves pfl */
-        pLog->u.r.dtor = dtor;
+        pLog->dtor = dtor;
         dtorpfl = pLog;
     }
 
@@ -345,7 +345,7 @@ static db_field_log * post(void *user, dbChannel *chan, db_field_log *pLog) {
     pLog->field_type++;
 
     if (my->offpost == 0) { /* The first one registers a dtor and saves pfl */
-        pLog->u.r.dtor = dtor;
+        pLog->dtor = dtor;
         dtorpfl = pLog;
     }
 

modules/database/test/ioc/db/dbChArrTest.cpp

@@ -179,7 +179,7 @@ static void check(short dbr_type) {
     pfl->field_type = DBF_CHAR; \
     pfl->field_size = 1; \
     pfl->no_elements = 26; \
-    pfl->u.r.dtor = freeArray; \
+    pfl->dtor = freeArray; \
     pfl->u.r.field = epicsStrDup("abcdefghijklmnopqrsstuvwxyz"); \
     testOk(!dbChannelGetField(pch, DBR_LONG, buf, NULL, &req, pfl), "Got Field value"); \
     testOk(req == Size, "Got %ld elements (expected %d)", req, Size); \