Fix cpplint's whitespace complaints.

Change-Id: I11fd2db2badf7bd98e7866ca2155d8ef1e112408
diff --git a/src/compiler/codegen/MethodCodegenDriver.cc b/src/compiler/codegen/MethodCodegenDriver.cc
index 87a86eb..d753fcc 100644
--- a/src/compiler/codegen/MethodCodegenDriver.cc
+++ b/src/compiler/codegen/MethodCodegenDriver.cc
@@ -186,7 +186,7 @@
         rlDest = oatGetDestWide(cUnit, mir, 0, 1);
     }
 
-    switch(opcode) {
+    switch (opcode) {
         case Instruction::NOP:
             break;