Fix a bunch of spelling mistakes :\

src/assembler-ia32.h

Index: src/assembler-ia32.h
diff --git a/src/assembler-ia32.h b/src/assembler-ia32.h
index 7db218ef41a671f5d312c46895f44f0f4e1541e5..cb273c0d9962d336358f32add4c20b8bbb87ef5a 100644
--- a/src/assembler-ia32.h
+++ b/src/assembler-ia32.h
@@ -405,7 +405,7 @@ class Assembler : public Malloced {
 
   // GetCode emits any pending (non-emitted) code and fills the descriptor
   // desc. GetCode() is idempotent; it returns the same result if no other
-  // Assembler functions are invoked inbetween GetCode() calls.
+  // Assembler functions are invoked in between GetCode() calls.
   void GetCode(CodeDesc* desc);
 
   // Read/Modify the code target in the branch/call instruction at pc.
@@ -430,10 +430,10 @@ class Assembler : public Malloced {
   // in the sense that some operations (e.g. mov()) can be called in more
   // the one way to generate the same instruction: The Register argument
   // can in some cases be replaced with an Operand(Register) argument.
-  // This should be cleaned up and made more othogonal. The questions
+  // This should be cleaned up and made more orthogonal. The questions
   // is: should we always use Operands instead of Registers where an
   // Operand is possible, or should we have a Register (overloaded) form
-  // instead? We must be carefull to make sure that the selected instruction
+  // instead? We must be careful to make sure that the selected instruction
   // is obvious from the parameters to avoid hard-to-find code generation
   // bugs.