Use curly braces in 'if' to make it easier to add logs

Change-Id: I58b33fefdd8bf703647414157a99a3223be3531c
diff --git a/services/audioflinger/Tracks.cpp b/services/audioflinger/Tracks.cpp
index 6039078..e173d4b 100644
--- a/services/audioflinger/Tracks.cpp
+++ b/services/audioflinger/Tracks.cpp
@@ -943,15 +943,17 @@
 
         mTimedMemoryDealer = new MemoryDealer(kTimedBufferHeapSize,
                                               "AudioFlingerTimed");
-        if (mTimedMemoryDealer == NULL)
+        if (mTimedMemoryDealer == NULL) {
             return NO_MEMORY;
+        }
     }
 
     sp<IMemory> newBuffer = mTimedMemoryDealer->allocate(size);
     if (newBuffer == NULL) {
         newBuffer = mTimedMemoryDealer->allocate(size);
-        if (newBuffer == NULL)
+        if (newBuffer == NULL) {
             return NO_MEMORY;
+        }
     }
 
     *buffer = newBuffer;