camera: Fix default camera areas not to throw NumberFormatException

* When using Camera#getParameters from Java, if the default camera area
  was set and then read (e.g. Parameters#getMeteringAreas), Java
  would throw a NumberFormatException due to the unexpected spaces

Change-Id: I567a1e6c58ed0bfb77cc09787393ea18eba5d613
1 file changed