Fix some typos in comments in ART.

Test: n/a
Change-Id: Idef8ab05baa1de0bed5a7310694cb241723d123c
diff --git a/compiler/jit/jit_compiler.cc b/compiler/jit/jit_compiler.cc
index a881c5e..3fc559e 100644
--- a/compiler/jit/jit_compiler.cc
+++ b/compiler/jit/jit_compiler.cc
@@ -88,7 +88,7 @@
 JitCompiler::JitCompiler() {
   compiler_options_.reset(new CompilerOptions());
   // Special case max code units for inlining, whose default is "unset" (implictly
-  // meaning no limit). Do this before parsing the actuall passed options.
+  // meaning no limit). Do this before parsing the actual passed options.
   compiler_options_->SetInlineMaxCodeUnits(CompilerOptions::kDefaultInlineMaxCodeUnits);
   {
     std::string error_msg;
diff --git a/runtime/gc/space/malloc_space.cc b/runtime/gc/space/malloc_space.cc
index 0965560..6936fdc 100644
--- a/runtime/gc/space/malloc_space.cc
+++ b/runtime/gc/space/malloc_space.cc
@@ -247,7 +247,7 @@
     }
   }
   // Use a bulk free, that merges consecutive objects before freeing or free per object?
-  // Documentation suggests better free performance with merging, but this may be at the expensive
+  // Documentation suggests better free performance with merging, but this may be at the expense
   // of allocation.
   context->freed.objects += num_ptrs;
   context->freed.bytes += space->FreeList(self, num_ptrs, ptrs);