patch 8.2.3548: GTK GUI crashen when reading from stdin

Problem:    GTK GUI crashen when reading from stdin.
Solution:   Do not overwrite the NUL after the string. (closes #9028)
diff --git a/src/version.c b/src/version.c
index 3f80877..1e7fb75 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3548,
+/**/
     3547,
 /**/
     3546,