Quick Compiler: pointer/boolean cleanup

More minor code cleanup - follow the Art convention of not treating
pointers as booleans in "for" loop tests.

Change-Id: I2fcd06efe6a51d1195c0900f7fa110fc01110001
diff --git a/src/compiler/codegen/local_optimizations.cc b/src/compiler/codegen/local_optimizations.cc
index d1a7444..cf04b21 100644
--- a/src/compiler/codegen/local_optimizations.cc
+++ b/src/compiler/codegen/local_optimizations.cc
@@ -78,9 +78,7 @@
 
   if (head_lir == tail_lir) return;
 
-  for (this_lir = PREV_LIR(tail_lir);
-      this_lir != head_lir;
-      this_lir = PREV_LIR(this_lir)) {
+  for (this_lir = PREV_LIR(tail_lir); this_lir != head_lir; this_lir = PREV_LIR(this_lir)) {
     int sink_distance = 0;
 
     /* Skip non-interesting instructions */
@@ -124,9 +122,7 @@
         stop_use_reg_mask = (GetPCUseDefEncoding() | this_lir->use_mask) & ~ENCODE_MEM;
     }
 
-    for (check_lir = NEXT_LIR(this_lir);
-        check_lir != tail_lir;
-        check_lir = NEXT_LIR(check_lir)) {
+    for (check_lir = NEXT_LIR(this_lir); check_lir != tail_lir; check_lir = NEXT_LIR(check_lir)) {
 
       /*
        * Skip already dead instructions (whose dataflow information is
@@ -275,9 +271,7 @@
   if (head_lir == tail_lir) return;
 
   /* Start from the second instruction */
-  for (this_lir = NEXT_LIR(head_lir);
-     this_lir != tail_lir;
-     this_lir = NEXT_LIR(this_lir)) {
+  for (this_lir = NEXT_LIR(head_lir); this_lir != tail_lir; this_lir = NEXT_LIR(this_lir)) {
 
     /* Skip non-interesting instructions */
     if ((this_lir->flags.is_nop == true) ||
@@ -308,9 +302,7 @@
     bool stop_here = false;
 
     /* Try to hoist the load to a good spot */
-    for (check_lir = PREV_LIR(this_lir);
-        check_lir != head_lir;
-        check_lir = PREV_LIR(check_lir)) {
+    for (check_lir = PREV_LIR(this_lir); check_lir != head_lir; check_lir = PREV_LIR(check_lir)) {
 
       /*
        * Skip already dead instructions (whose dataflow information is