fix scrambled table rows

Author: hvdwolf

src/main/java/org/hvdw/jexiftoolgui/metadata/ExportMetadata.java

@@ -252,10 +252,11 @@ public static void WriteCSVFromImgComp(List<String[]> allMetadata, JPanel ciwRoo
                     e.printStackTrace();
                 }
             }
-            // use the setpdfDocs variabel for it. No use to create another variable
+            // use the setpdfDocs variable for it. No use to create another variable
             MyVariables.setpdfDocs(producedDocs);
             logger.debug("produced csv Docs {}", producedDocs);
         } else {   //onecombinedcsv
+            producedDocs = "";
             List<String> csvrows = new ArrayList<String>();
             filename = files[0].getName();
             tmpfile = files[0];
@@ -292,6 +293,7 @@ public static void WriteCSVFromImgComp(List<String[]> allMetadata, JPanel ciwRoo
                 logger.error("error writing csv {}", e);
                 e.printStackTrace();
             }
+            MyVariables.setpdfDocs(producedDocs);
         }
 
     }

src/main/java/org/hvdw/jexiftoolgui/model/CompareImages.java

@@ -202,7 +202,9 @@ public void run() {
                         //logger.info(Arrays.toString(oneRow));
                         category_tagname.add(oneRow[0]);
                     }
-                    Set<String> unique_cat_tag = new HashSet<String>(category_tagname);
+                    Set<String> unique_cat_tag_set = new HashSet<String>(category_tagname);
+                    List<String> unique_cat_tag = new ArrayList<>(unique_cat_tag_set);
+                    Collections.sort(unique_cat_tag);
                     end = System.currentTimeMillis();
                     logger.debug("Creating category_tagname list + hashset {} ms", (end - start));