srtzip: Ignore the output file in any list of files

srtzip.pike

@@ -10,7 +10,7 @@ int main(int argc,array(string) argv)
 		else if (sscanf(arg,"--%s",string key)) opt[key]="1";
 		else files+=({arg});
 
-	string outfn=files[-1]; files=files[..<1];
+	string outfn=files[-1]; files=files[..<1]-({outfn});
 	if (sizeof(files)<2) exit(0,"USAGE: pike %s input1.srt input2.srt [input3.srt...] output.srt\nAttempts to 'zip' the inputs into the output.\n");
 	write("Combining to %s:\n%{\t%s\n%}",outfn,files);
 	array(array(string)) inputs=String.trim_all_whites(utf8_to_string(Stdio.read_file(files[*])[*])[*])[*]/"\n\n";