dbGet should not crash when source is an empty array

src/ioc/db/dbAccess.c

@@ -898,6 +898,11 @@ long dbGet(DBADDR *paddr, short dbrType,
         } else {
             DBADDR localAddr = *paddr; /* Structure copy */
 
+            if (pfl->no_elements < 1) {
+                status = S_db_badField;
+                goto done;
+            }
+
             localAddr.field_type = pfl->field_type;
             localAddr.field_size = pfl->field_size;
             localAddr.no_elements = pfl->no_elements;