Fix #373: Implicitly make gl_FragColor a location=0 output.
diff --git a/Test/baseResults/spv.discard-dce.frag.out b/Test/baseResults/spv.discard-dce.frag.out
index 173ea26..5013bd3 100755
--- a/Test/baseResults/spv.discard-dce.frag.out
+++ b/Test/baseResults/spv.discard-dce.frag.out
@@ -18,6 +18,7 @@
                               Name 30  "y"
                               Name 36  "radius"
                               Name 59  "gl_FragColor"
+                              Decorate 59(gl_FragColor) Location 0
                2:             TypeVoid
                3:             TypeFunction 2
                6:             TypeFloat 32