!1961 fixed LeakyReLU

Merge pull request !1961 from jiangjinsheng/issue_net

mindspore/nn/layer/activation.py

@@ -249,11 +249,11 @@ class LeakyReLU(Cell):
         self.alpha = alpha
 
     def construct(self, x):
-        alpha = P.Cast()(F.scalar_to_array(self.alpha), P.DType()(x))
-        if alpha <= 1:
-            out = P.Maximum()(alpha * x, x)
+        alpha_array = P.Cast()(F.scalar_to_array(self.alpha), P.DType()(x))
+        if self.alpha <= 1:
+            out = P.Maximum()(alpha_array * x, x)
         else:
-            out = P.Minimum()(alpha * x, x)
+            out = P.Minimum()(alpha_array * x, x)
         return out