A64: Tidy up Push and Pop TODOs.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 1f83a38be7de55c17a8be50b81132f38a9336a85..84507505844910351716e79dd845b20965be7cb4 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -1332,6 +1332,7 @@ class MaybeObject BASE_EMBEDDED {
     "The instruction to patch should be an ori")                              \
   V(kTheSourceAndDestinationAreTheSame,                                       \
     "The source and destination are the same")                                \
+  V(kTheStackPointerIsNotAligned, "The stack pointer is not aligned.")        \
   V(kTheStackWasCorruptedByMacroAssemblerCall,                                \
     "The stack was corrupted by MacroAssembler::Call()")                      \
   V(kTooManyParametersLocals, "Too many parameters/locals")                   \