patch 8.0.1198: older compilers don't know uint8_t

Problem:    Older compilers don't know uint8_t.
Solution:   Use char_u instead.
diff --git a/src/version.c b/src/version.c
index 2115ead..0fbb99e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1198,
+/**/
     1197,
 /**/
     1196,