outobj: change cutting -> truncating

I believe "truncating" is the more common terminology in this case, so
change to it for aestetic reasons only.

Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>

output/outobj.c

@@ -425,7 +425,7 @@ static ObjRecord *obj_name(ObjRecord * orp, const char *name)
     uint8_t *ptr;
 
     if (len > UINT8_MAX) {
-        nasm_warn(WARN_OTHER, "cutting object name `%.64s...' to %u bytes",
+        nasm_warn(WARN_OTHER, "truncating object name `%.64s...' to %u bytes",
                   name, UINT8_MAX);
         len = UINT8_MAX;
     }