Fix cpplint whitespace/braces issues

Change-Id: Ide80939faf8e8690d8842dde8133902ac725ed1a
diff --git a/compiler/dex/arena_bit_vector.cc b/compiler/dex/arena_bit_vector.cc
index 1fbf774..724fdf8 100644
--- a/compiler/dex/arena_bit_vector.cc
+++ b/compiler/dex/arena_bit_vector.cc
@@ -114,8 +114,7 @@
 }
 
 // Count the number of bits that are set.
-int ArenaBitVector::NumSetBits()
-{
+int ArenaBitVector::NumSetBits() {
   unsigned int count = 0;
 
   for (unsigned int word = 0; word < storage_size_; word++) {
@@ -129,8 +128,7 @@
  * since there might be unused bits - setting those to one will confuse the
  * iterator.
  */
-void ArenaBitVector::SetInitialBits(unsigned int num_bits)
-{
+void ArenaBitVector::SetInitialBits(unsigned int num_bits) {
   DCHECK_LE(((num_bits + 31) >> 5), storage_size_);
   unsigned int idx;
   for (idx = 0; idx < (num_bits >> 5); idx++) {