Fix non-interactive compilation

`.znap.compile` checks the `funcstack`, with the intent of determining
whether or not to output user visible messages -- they should only be
output when called directly from the `znap` CLI tool.

Unfortunately, this check was written in a way that means that when
called from outside of the main znap function (eg, compdump background
compilation, auto-compile), no compilation happened.

This change re-orders the checks so that `.znap.compile` works when
called from other parts of znap.

Fixes #267

functions/.znap.compile

@@ -49,8 +49,10 @@ while (( $#files[@] )); do
         opt=R
       fi
 
-      if [[ $funcstack[2] == znap ]] && emulate zsh -c "zcompile -U$opt -- ${(q)f}"; then
-        print -Pr -- "${(D)f:h}/%F{green}$f:t.zwc%f"
+      if emulate zsh -c "zcompile -U$opt -- ${(q)f}"; then
+        if [[ $funcstack[2] == znap ]] ; then
+          print -Pr -- "${(D)f:h}/%F{green}$f:t.zwc%f"
+        fi
       else
         ret=1
         zf_rm -f -- $f.zwc