style: fix undefined variable

src/nodes/glfx.js

@@ -551,6 +551,7 @@
             gl.disable(gl.DEPTH_TEST);
             var mesh = Mesh.getScreenQuad();
             var camera = global.LS ? LS.Renderer._current_camera : null;
+            var camera_planes;
             if (camera)
                 camera_planes = [
                     LS.Renderer._current_camera.near,

src/nodes/math.js

@@ -620,6 +620,7 @@
         for (var i = 0, l = this.outputs.length; i < l; ++i) {
             var output = this.outputs[i];
             if (!output.links || !output.links.length) continue;
+            var value;
             switch (output.name) {
                 case "A==B":
                     value = A == B;
@@ -786,6 +787,7 @@
 
         for (var i = 0, l = this.outputs.length; i < l; ++i) {
             var output = this.outputs[i];
+            var value;
             switch (output.name) {
                 case "sin":
                     value = Math.sin(v);