handle images without maxWidth or maxHeight

cgi/autodoc.fcgi

 				$conf->{path}{global}, $conf->{path}{cache}, $wh, $size);
 		}
 	}
+	else {
+		if ( defined $id ) {
+			$dst = sprintf("%s/%s/%s.jpeg",
+				$conf->{path}{global}, $conf->{path}{cache}, $id);
+		}
+		else {
+			$dst = sprintf("%s/%s/error_img.jpeg",
+				$conf->{path}{global}, $conf->{path}{cache});
+		}
+	}
 
 	my $imgfile;
 
 	}
 	else {
 		if ( ! -r $dst ) {
-			my $cmd = sprintf("convert %s -resize %s%s %s",
-				$src,
-				$wh eq 'h' ? 'x' : '',
-				$size,
-				$dst
-			);
+			my $cmd;
+			if ( defined $wh && defined $size ) {
+				$cmd = sprintf("convert %s -resize %s%s %s",
+					$src,
+					$wh eq 'h' ? 'x' : '',
+					$size,
+					$dst
+				);
+			}
+			else {
+				$cmd sprintf("cp %s %s", $src, $dst);
+			}
 			print STDERR "CMD=$cmd\n";
 			system($cmd);
 		}