Code refactoring: remove unneeded variables

src/libANGLE/validationES.cpp

@@ -5232,7 +5232,10 @@ bool ValidateGetFramebufferAttachmentParameteriv(ValidationContext *context,
                                                  GLsizei *numParams)
 {
     // Only one parameter is returned from glGetFramebufferAttachmentParameteriv
-    *numParams = 1;
+    if (numParams)
+    {
+        *numParams = 1;
+    }
 
     if (!ValidFramebufferTarget(target))
     {
@@ -5546,7 +5549,10 @@ bool ValidateGetBufferParameteri64vRobustANGLE(ValidationContext *context,
 bool ValidateGetProgramiv(Context *context, GLuint program, GLenum pname, GLsizei *numParams)
 {
     // Currently, all GetProgramiv queries return 1 parameter
-    *numParams = 1;
+    if (numParams)
+    {
+        *numParams = 1;
+    }
 
     Program *programObject = GetValidProgram(context, program);
     if (!programObject)

src/libGLESv2/entry_points_gles_2_0.cpp

@@ -1091,10 +1091,9 @@ void GL_APIENTRY GetFramebufferAttachmentParameteriv(GLenum target, GLenum attac
     Context *context = GetValidGlobalContext();
     if (context)
     {
-        GLsizei numParams = 0;
         if (!context->skipValidation() &&
             !ValidateGetFramebufferAttachmentParameteriv(context, target, attachment, pname,
-                                                         &numParams))
+                                                         nullptr))
         {
             return;
         }
@@ -1126,9 +1125,8 @@ void GL_APIENTRY GetProgramiv(GLuint program, GLenum pname, GLint* params)
     Context *context = GetValidGlobalContext();
     if (context)
     {
-        GLsizei numParams = 0;
         if (!context->skipValidation() &&
-            !ValidateGetProgramiv(context, program, pname, &numParams))
+            !ValidateGetProgramiv(context, program, pname, nullptr))
         {
             return;
         }