Removed redundant calls to ReactFiberStack.reset()

src/renderers/shared/fiber/ReactFiberContext.js

@@ -29,7 +29,6 @@ const {
   createCursor,
   pop,
   push,
-  reset,
 } = require('ReactFiberStack');
 
 if (__DEV__) {
@@ -136,8 +135,6 @@ exports.pushContextProvider = function(workInProgress : Fiber, didPerformWork :
 };
 
 exports.resetContext = function() : void {
-  reset();
-
   contextStackCursor.current = null;
   didPerformWorkStackCursor.current = false;
 };

src/renderers/shared/fiber/ReactFiberHostContext.js

@@ -22,7 +22,6 @@ const {
   createCursor,
   pop,
   push,
-  reset,
 } = require('ReactFiberStack');
 
 export type HostContext<C, CX> = {
@@ -114,8 +113,6 @@ module.exports = function<T, P, I, TI, C, CX>(
   }
 
   function resetHostContainer() {
-    reset();
-
     contextStackCursor.current = null;
     rootInstanceStackCursor.current = null;
   }

src/renderers/shared/fiber/ReactFiberScheduler.js

@@ -21,6 +21,7 @@ var {
   isContextProvider,
   popContextProvider,
 } = require('ReactFiberContext');
+const { reset } = require('ReactFiberStack');
 
 var ReactFiberBeginWork = require('ReactFiberBeginWork');
 var ReactFiberCompleteWork = require('ReactFiberCompleteWork');
@@ -159,6 +160,9 @@ module.exports = function<T, P, I, TI, C, CX>(config : HostConfig<T, P, I, TI, C
   }
 
   function resetContextStack() {
+    // Reset the stack
+    reset();
+    // Reset the cursors
     resetContext();
     resetHostContainer();
   }