Run CM_MAX_CLIPS handling/vacuuming out of selection loop

clipmenud

@@ -263,6 +263,7 @@ while true; do
             # we would skip first.
             _xsel -o --clipboard | _xsel -i --clipboard
         fi
+    done
 
     # Fail quickly if we're not far enough over, to avoid calling `cksum` a
     # lot and killing perf if we're not batched.
@@ -291,7 +292,6 @@ while true; do
             fi
         done
     fi
-    done
 
     flock -u "$lock_fd"