Avoid recursive in padding initialization

Author: Atry

Tensors/src/main/scala/com/thoughtworks/compute/Tensors.scala

@@ -73,9 +73,9 @@ trait Tensors extends OpenCL {
     }
   }
   object Tensor {
-    def fill(value: Float, shape0: Array[Int], padding: Float = 0.0f) = {
+    def fill(value: Float, shape0: Array[Int], padding0: Float = 0.0f) = {
       new InlineTensor {
-        val padding: Float = padding
+        val padding: Float = padding0
         val shape: shape0.type = shape0
         val closure: trees.FloatTerm = float.literal(value)
       }