patch 9.0.0776: MSVC can't have field name "small"

Problem:    MSVC can't have field name "small".
Solution:   Rename small to smallfont.
diff --git a/src/version.c b/src/version.c
index 57af232..fc7a8d4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    776,
+/**/
     775,
 /**/
     774,