fix minor bug found while doing Android Wear porting

core/src/processing/core/PApplet.java

@@ -7602,7 +7602,7 @@ public class PApplet implements PConstants {
     String lower = filename.toLowerCase();
     int dot = filename.lastIndexOf('.');
     if (dot == -1) {
-      extension = "unknown";  // no extension found
+      return "";  // no extension found
     }
     extension = lower.substring(dot + 1);
 
@@ -11138,9 +11138,9 @@ public class PApplet implements PConstants {
   /**
    * ( begin auto-generated from clip.xml )
    *
-   * Limits the rendering to the boundaries of a rectangle defined 
-   * by the parameters. The boundaries are drawn based on the state 
-   * of the <b>imageMode()</b> fuction, either CORNER, CORNERS, or CENTER. 
+   * Limits the rendering to the boundaries of a rectangle defined
+   * by the parameters. The boundaries are drawn based on the state
+   * of the <b>imageMode()</b> fuction, either CORNER, CORNERS, or CENTER.
    *
    * ( end auto-generated )
    *

todo.txt

@@ -1,5 +1,9 @@
 0249 (3.0.3)
 
+contribs
+X Grab bag of smaller, mainly ARM-related updates
+X   https://github.com/processing/processing/pull/4300
+
 
 _ tabs aren't working properly (several bugs?)
 _   https://github.com/processing/processing/issues/3975