Simplify code

Use DefaultKeyedVector::valueFor to avoid extra test
Make local variables as local as possible
No double parentheses
No typedef for single use
No parentheses around indirect function call
No AudioFlinger:: prefix when not needed
Remove unnecessary casts
Remove block with only one line

Saves 128 bytes

Change-Id: I3a87430eeb01b81e7b81a1c38f6fdd3274ec48f3
diff --git a/services/audioflinger/AudioPolicyService.cpp b/services/audioflinger/AudioPolicyService.cpp
index 041b5a8..f1cd424 100644
--- a/services/audioflinger/AudioPolicyService.cpp
+++ b/services/audioflinger/AudioPolicyService.cpp
@@ -616,8 +616,7 @@
 {
     Vector<sp<AudioEffect> > fxVector = inputDesc->mEffects;
     for (size_t i = 0; i < fxVector.size(); i++) {
-        sp<AudioEffect> fx = fxVector.itemAt(i);
-        fx->setEnabled(enabled);
+        fxVector.itemAt(i)->setEnabled(enabled);
     }
 }