Reformat existing code. There should be no functional effects.

webrtc/common_audio/signal_processing/filter_ar_fast_q12_armv7.S

Index: webrtc/common_audio/signal_processing/filter_ar_fast_q12_armv7.S
diff --git a/webrtc/common_audio/signal_processing/filter_ar_fast_q12_armv7.S b/webrtc/common_audio/signal_processing/filter_ar_fast_q12_armv7.S
index ff60cc6198214c49df6e61fd883bde0be50188fa..b72396e1c308eb75a8985b4c8bc56e00294913e3 100644
--- a/webrtc/common_audio/signal_processing/filter_ar_fast_q12_armv7.S
+++ b/webrtc/common_audio/signal_processing/filter_ar_fast_q12_armv7.S
@@ -160,6 +160,9 @@ END:
 @  int i = 0;
 @  int j = 0;
 @
+@  assert(data_length > 0);
+@  assert(coefficients_length > 1);
+@
 @  for (i = 0; i < data_length - 1; i += 2) {
 @    int32_t output1 = 0;
 @    int32_t sum1 = 0;