skia: Initialize value passed to GetShaderiv in GLBench

bench/GLBench.cpp

Index: bench/GLBench.cpp
diff --git a/bench/GLBench.cpp b/bench/GLBench.cpp
index 531bf88b55e5b2782eda5f767374689c5312808a..9a03004906bb35a80e7f2fb85aa3db5e11664bf4 100644
--- a/bench/GLBench.cpp
+++ b/bench/GLBench.cpp
@@ -70,7 +70,7 @@ GrGLuint GLBench::CompileShader(const GrGLInterface* gl, const char* shaderSrc,
     GR_GL_CALL(gl, CompileShader(shader));
 
     // Check for compile time errors
-    GrGLint success;
+    GrGLint success = 0;

[bsalomon, 2015/09/08 13:27:16]

There is a macro GR_GL_ZERO_INIT. It is just defined to be zero but is meant to
document the zero inits for the command buffer. Can we use that? Otherwise lgtm.

     GrGLchar infoLog[512];
     GR_GL_CALL(gl, GetShaderiv(shader, GR_GL_COMPILE_STATUS, &success));
     if (!success) {
@@ -93,7 +93,7 @@ GrGLuint GLBench::CreateProgram(const GrGLInterface* gl, const char* vshader, co
     GR_GL_CALL(gl, LinkProgram(shaderProgram));
 
     // Check for linking errors
-    GrGLint success;
+    GrGLint success = 0;
     GrGLchar infoLog[512];
     GR_GL_CALL(gl, GetProgramiv(shaderProgram, GR_GL_LINK_STATUS, &success));
     if (!success) {