updated for version 7.4.275
Problem:    When changing the type of a sign that hasn't been placed ther is
            no error message.
Solution:   Add an error message. (Christian Brabandt)
diff --git a/src/version.c b/src/version.c
index 3356879..95daaed 100644
--- a/src/version.c
+++ b/src/version.c
@@ -735,6 +735,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    275,
+/**/
     274,
 /**/
     273,