gvpr assignable: make it clearer that argument to 'TFA_Advance' fits in a char

Squashes a -Wconversion warning.

diff --git a/lib/gvpr/compile.c b/lib/gvpr/compile.c
index 4b3502809f49388b405788914257fd667c9b8d5f..e907c1db9d165ff343cb7a82732a9bfbaebd0f4a 100644 (file)
--- a/lib/gvpr/compile.c
+++ b/lib/gvpr/compile.c
@@ -353,7 +353,7 @@ static void assignable (Agobj_t *objp, unsigned char* name) {
 
     TFA_Init();
     while (TFA_State >= 0 && (ch = *p)) {
-        TFA_Advance(ch > 127 ? 127 : ch);
+        TFA_Advance(ch > 127 ? 127 : (char)ch);
         p++;
     }
     rv = TFA_Definition();