Fix: Exception when decreasing indent.

Fix to prevent an exception when decreasing indents if the length
of the last line of file is less than the indent width.

Author: Shigeru KANEMOTO

app/src/processing/app/syntax/JEditTextArea.java

@@ -1151,7 +1151,11 @@ public void select(int start, int end)
         newBias = true;
       }
 
-    if(newStart < 0 || newEnd > getDocumentLength())
+    if (newEnd > getDocumentLength()) {
+      newEnd = getDocumentLength();
+    }
+
+    if(newStart < 0)
       {
         throw new IllegalArgumentException("Bounds out of"
                                            + " range: " + newStart + "," +