scons: Add uniform_query.cpp to SConscript.
diff --git a/src/mesa/SConscript b/src/mesa/SConscript
index 9f142bf..45414bc 100644
--- a/src/mesa/SConscript
+++ b/src/mesa/SConscript
@@ -129,6 +129,7 @@
     'main/texstore.c',
     'main/texturebarrier.c',
     'main/transformfeedback.c',
+    'main/uniform_query.cpp',
     'main/uniforms.c',
     'main/varray.c',
     'main/version.c',