Mark color uniform fetched after fetching it

Change-Id: I10e8027018608070a536eb8b51c7a4272e37006c
diff --git a/libs/hwui/Program.cpp b/libs/hwui/Program.cpp
index a9f13f7..4aff23e 100644
--- a/libs/hwui/Program.cpp
+++ b/libs/hwui/Program.cpp
@@ -153,7 +153,7 @@
 void Program::setColor(const float r, const float g, const float b, const float a) {
     if (!mHasColorUniform) {
         mColorUniform = getUniform("color");
-        mHasColorUniform = false;
+        mHasColorUniform = true;
     }
     glUniform4f(mColorUniform, r, g, b, a);
 }