Fix suggested output dir to be the same as input file

src/usr/bin/compress-pdf

@@ -139,6 +139,12 @@ VERSION="1.1"
 ZENITY=$(which zenity)
 
 pdf_file=$(basename "$1")
+if [ $( echo "$1"|grep -c '^\/' ) -eq 0 ]
+then
+	default_output_dir=$( pwd )/$( dirname $1 )
+else
+	default_output_dir=$( dirname $1 )
+fi
 
 # Check if Ghostscript is installed
 GS="/usr/bin/ghostscript"
@@ -189,7 +195,7 @@ case $selected_level in
 esac
 
 # Choose output file name
-suggested_filename=compressed-"$pdf_file"
+suggested_filename="$default_output_dir/compressed-$pdf_file"
 output_filename=$($ZENITY --file-selection --save --confirm-overwrite --filename="$suggested_filename" --title="$label_filename")
 
 if [ "$?" = 1 ] ; then