patch 8.2.3634: error for already defined function uses wrong line number

Problem:    Error for already defined function uses wrong line number.
Solution:   Set SOURCING_LNUM before giving the error message. (closes #9085)
diff --git a/src/version.c b/src/version.c
index b53524f..fbbc961 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3634,
+/**/
     3633,
 /**/
     3632,