Fix cpplint's whitespace warnings.

Change-Id: I16b69d773e59b49e8e30227b5aa5cb1959a8930f
diff --git a/src/context_arm.cc b/src/context_arm.cc
index 885a9bc..2f7274d 100644
--- a/src/context_arm.cc
+++ b/src/context_arm.cc
@@ -11,10 +11,10 @@
 ArmContext::ArmContext() {
 #ifndef NDEBUG
   // Initialize registers with easy to spot debug values
-  for (int i=0; i < 16; i++) {
+  for (int i = 0; i < 16; i++) {
     gprs_[i] = 0xEBAD6070+i;
   }
-  for (int i=0; i < 32; i++) {
+  for (int i = 0; i < 32; i++) {
     fprs_[i] = 0xEBAD8070+i;
   }
 #endif
@@ -29,7 +29,7 @@
   if (spill_count > 0) {
     // Lowest number spill is furthest away, walk registers and fill into context
     int j = 1;
-    for(int i = 0; i < 16; i++) {
+    for (int i = 0; i < 16; i++) {
       if (((core_spills >> i) & 1) != 0) {
         gprs_[i] = fr.LoadCalleeSave(spill_count - j);
         j++;
@@ -39,7 +39,7 @@
   if (fp_spill_count > 0) {
     // Lowest number spill is furthest away, walk registers and fill into context
     int j = 1;
-    for(int i = 0; i < 32; i++) {
+    for (int i = 0; i < 32; i++) {
       if (((fp_core_spills >> i) & 1) != 0) {
         fprs_[i] = fr.LoadCalleeSave(spill_count + fp_spill_count - j);
         j++;