Fix a bunch of memory issues in Vulkan

src/gpu/vk/GrVkPipelineStateBuilder.cpp

 /*
 * Copyright 2016 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
 #include "vk/GrVkPipelineStateBuilder.h"
 
 #include "vk/GrVkGpu.h"
@@ skipping 266 matching lines @@
     GR_VK_CALL(fGpu->vkInterface(), DestroyShaderModule(fGpu->device(), fragShaderModule,
                                                         nullptr));
 
     if (!pipeline) {
         GR_VK_CALL(fGpu->vkInterface(), DestroyPipelineLayout(fGpu->device(), pipelineLayout,
                                                               nullptr));
         GR_VK_CALL(fGpu->vkInterface(), DestroyDescriptorSetLayout(fGpu->device(), dsLayout[0],
                                                                    nullptr));
         GR_VK_CALL(fGpu->vkInterface(), DestroyDescriptorSetLayout(fGpu->device(), dsLayout[1],
                                                                    nullptr));
+        this->cleanupFragmentProcessors();
         return nullptr;
     }
 
     return new GrVkPipelineState(fGpu,
                                  desc,
                                  pipeline,
                                  pipelineLayout,
                                  dsLayout,
                                  fUniformHandles,
                                  fUniformHandler.fUniforms,
                                  fUniformHandler.fCurrentVertexUBOOffset,
                                  fUniformHandler.fCurrentFragmentUBOOffset,
                                  numSamplers,
                                  fGeometryProcessor,
                                  fXferProcessor,
                                  fFragmentProcessors);
 }