spelling: occurrence

Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>

libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWF.java

@@ -5261,7 +5261,7 @@ public final class SWF implements SWFContainerItem, Timelined, Openable {
 
     /**
      * Sorts character ids. Order of character ids will match the first
-     * occurence of the characters.
+     * occurrence of the characters.
      */
     public void sortCharacterIds() {
         int maxId = Math.max(tags.size(), getNextCharacterId());

libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/xfl/XFLConverter.java

@@ -1491,7 +1491,7 @@ public class XFLConverter {
 
         for (CharacterTag symbol : characters) {
             if ((symbol instanceof ShapeTag) && nonLibraryShapes.contains(symbol)) {
-                continue; //shapes with 1 ocurrence and single layer are not added to library
+                continue; //shapes with 1 occurrence and single layer are not added to library
             }
 
             if ((symbol instanceof ShapeTag) || (symbol instanceof DefineSpriteTag) || (symbol instanceof ButtonTag)) {

libsrc/ffdec_lib/src/com/jpexs/decompiler/graph/Graph.java

@@ -177,7 +177,7 @@ public class Graph {
      * input edges are already visited (not counting back edges), then all its
      * output edges are processed.
      * <p>
-     * This time is useful when sorting nodes according their occurence in
+     * This time is useful when sorting nodes according their occurrence in
      * getMostCommonPart method - used for switch detection
      *
      * @param loops Already calculated loops to get backedges from.