Cleanup based on comments.

Change-Id: I2d261b3cd240b890001dcc7d2a849cfdc34328bf
diff --git a/driver/rsdProgramStore.cpp b/driver/rsdProgramStore.cpp
index af44b02..8c7301c 100644
--- a/driver/rsdProgramStore.cpp
+++ b/driver/rsdProgramStore.cpp
@@ -111,7 +111,7 @@
         drv->blendSrc = GL_SRC_ALPHA_SATURATE;
         break;
     default:
-        LOGE("Unknown blend src mode.");
+        rsc->setError(RS_ERROR_FATAL_DRIVER, "Unknown blend src mode.");
         goto error;
     }
 
@@ -141,7 +141,7 @@
         drv->blendDst = GL_ONE_MINUS_DST_ALPHA;
         break;
     default:
-        LOGE("Unknown blend dst mode.");
+        rsc->setError(RS_ERROR_FATAL_DRIVER, "Unknown blend dst mode.");
         goto error;
     }