ShaderSource does not generate needed errors
TRAC #11664
Generate GL_INVALID_VALUE when shader name is 0
Signed-off-by: Shannon Woods
Signed-off-by: Daniel Koch

Author:    Nicolas Capens

git-svn-id: http://angleproject.googlecode.com/svn/trunk@95 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/libGLESv2.cpp b/src/libGLESv2/libGLESv2.cpp
index ce1a282..c03cfba 100644
--- a/src/libGLESv2/libGLESv2.cpp
+++ b/src/libGLESv2/libGLESv2.cpp
@@ -2903,7 +2903,7 @@
 
     try
     {
-        if (count < 0)
+        if (shader == 0 || count < 0)
         {
             return error(GL_INVALID_VALUE);
         }