patch 9.0.0062: compiler warnings for signed/unsigned char

Problem:    Compiler warnings for signed/unsigned char.
Solution:   Add type casts. (John Marriott)
diff --git a/src/gui_w32.c b/src/gui_w32.c
index 472cebf..43fef8b 100644
--- a/src/gui_w32.c
+++ b/src/gui_w32.c
@@ -8549,7 +8549,7 @@
     char_u	*event;
     INPUT	inputs[1];
 
-    event = dict_get_string(args, "event", TRUE);
+    event = dict_get_string(args, (char_u *)"event", TRUE);
     if (event == NULL)
 	return FALSE;
 
@@ -8559,7 +8559,7 @@
     {
 	WORD	    vkCode;
 
-	vkCode = dict_get_number_def(args, "keycode", 0);
+	vkCode = dict_get_number_def(args, (char_u *)"keycode", 0);
 	if (vkCode <= 0 || vkCode >= 0xFF)
 	{
 	    semsg(_(e_invalid_argument_nr), (long)vkCode);
diff --git a/src/version.c b/src/version.c
index 46d9643..c0230c4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -736,6 +736,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    62,
+/**/
     61,
 /**/
     60,