patch 8.1.0173: compiler warning on MS-Windows

Problem:    Compiler warning on MS-Windows.
Solution:   Add type cast. (Mike Williams)
diff --git a/src/libvterm/src/state.c b/src/libvterm/src/state.c
index a707831..d977eca 100644
--- a/src/libvterm/src/state.c
+++ b/src/libvterm/src/state.c
@@ -268,7 +268,7 @@
   if(!npoints)
   {
     vterm_allocator_free(state->vt, codepoints);
-    return eaten;
+    return (int)eaten;
   }
 
   if(state->gsingle_set && npoints)
diff --git a/src/version.c b/src/version.c
index 40f3b46..de6f550 100644
--- a/src/version.c
+++ b/src/version.c
@@ -790,6 +790,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    173,
+/**/
     172,
 /**/
     171,