patch 8.1.1973: cannot build without the quickfix feature

Problem:    Cannot build without the quickfix feature.
Solution:   Remove #ifdef for qf_info_T.
diff --git a/src/structs.h b/src/structs.h
index e599550..ce618b9 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -2061,9 +2061,7 @@
 # define B_SPELL(buf)  (0)
 #endif
 
-#ifdef FEAT_QUICKFIX
 typedef struct qf_info_S qf_info_T;
-#endif
 
 #ifdef FEAT_PROFILE
 /*
diff --git a/src/version.c b/src/version.c
index 321da51..c9860ac 100644
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1973,
+/**/
     1972,
 /**/
     1971,