patch 8.0.1750: crash when clearing loccation list in autocommand

Problem:    Crash when clearing loccation list in autocommand.
Solution:   Check if "qi" equals "ql_info". (Yegappan Lakshmanan)
diff --git a/src/version.c b/src/version.c
index 5589204..123db5b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1750,
+/**/
     1749,
 /**/
     1748,