Fix CppCheck 'duplicateExpression' warning

BTW, all three cases looks similar. It would be nice to refactor it
to avoid repeating code.
add sane radius increment
NavMesh
-=-=-=-

-Fixed NavMesh API
-New NavMesh demo
-Support for animated Particles2D
-Fixes for native video playback on iOS
missing navmesh demo and small fixes
-fix sound room params (was not working)
-fixes to DAE exporter
-ios fixes (video)
Merge pull request #867 from adolson/circleshape2d-radius-increment

add sane radius increment to CircleShape2D
Merge pull request #863 from JIghtuse/master

Fix CppCheck 'duplicateExpression' warning
-Ability to ask for documents/pictures/etc system dirs.
-Fixes to animationplayer
-fixes to collada importer
-fixes to vmethod for button
Add move_child_notify method in Node class
use tab instead of space
Remove multiprocessing from imports in SConstruct

Rationale: unused import, also prevented scons from building on my
setup.
Merge pull request #917 from thomassigurdsen/master

SConstruct imports multiprocessing, which is then never used
Batch of Bugfixes
-=-=-=-=-=-=-=-=-

-Fixed Export UV XForm (should work now). #923
-Fixed enforcement of limits in property editor. #919
-Fixed long-standing bug of export editings in script inheritance. #914, #859, #756
-Fixed horrible error reporting in shader language. #912
-Added kinematic collision with plane (please test well). #911
-Fixed double animation track insert when using 2D rigs. #904
-VKey updates offset parameter in sprite edition. #901
-Do not allow anymore a script to preload itself. (does not fix #899, but narrows it down)
-Avoid connection editor from overriding selected text. #897
-Fixed timer autostart. #876
-Fixed collision layers in 3D physics. #872
-Improved operators in shader #857
-Fixed ambient lighting bug #834
-Avoid editor from processing gamepad input #813
-Added not keyword #752

Please test!
missing fix in file
more bugfixes
apply patch #882 from dcubix
now undo/redo supported
Merge pull request #933 from adolson/alt-arrows-editor-fix

Alt+arrows editor undo/redo fix
More Fixes
-=-=-=-=-=

-Bug in saving multinline text in xml fixed. #925
-typo in android export fixed. #930