patch 8.1.0919: compiler warnings

Problem:    Compiler warnings.
Solution:   Add type casts. (Mike Williams)
diff --git a/src/message.c b/src/message.c
index 4aa15eb..82772fd 100644
--- a/src/message.c
+++ b/src/message.c
@@ -2938,7 +2938,7 @@
 mch_errmsg(char *str)
 {
 #if defined(WIN3264) && !defined(FEAT_GUI_MSWIN)
-    int	    len = STRLEN(str);
+    int	    len = (int)STRLEN(str);
     DWORD   nwrite = 0;
     DWORD   mode = 0;
     HANDLE  h = GetStdHandle(STD_ERROR_HANDLE);
@@ -3026,7 +3026,7 @@
 mch_msg(char *str)
 {
 #if defined(WIN3264) && !defined(FEAT_GUI_MSWIN)
-    int	    len = STRLEN(str);
+    int	    len = (int)STRLEN(str);
     DWORD   nwrite = 0;
     DWORD   mode;
     HANDLE  h = GetStdHandle(STD_OUTPUT_HANDLE);
diff --git a/src/regexp_nfa.c b/src/regexp_nfa.c
index dadb9d0..b83e309 100644
--- a/src/regexp_nfa.c
+++ b/src/regexp_nfa.c
@@ -4800,7 +4800,7 @@
 		emsg(_(e_maxmempat));
 		return NULL;
 	    }
-	    newl = (nfa_thread_T *)alloc(newsize);
+	    newl = (nfa_thread_T *)alloc((int)newsize);
 	    if (newl == NULL)
 		return NULL;
 	    l->len = newlen;
diff --git a/src/version.c b/src/version.c
index 73840c2..30b78e5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -784,6 +784,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    919,
+/**/
     918,
 /**/
     917,