Fix presubmit errors in r7388

src/mips/macro-assembler-mips.h

Index: src/mips/macro-assembler-mips.h
===================================================================
--- src/mips/macro-assembler-mips.h	(revision 7388)
+++ src/mips/macro-assembler-mips.h	(working copy)
@@ -760,7 +760,7 @@
   // Arguments 1-4 are placed in registers a0 thru a3 respectively.
   // Arguments 5..n are stored to stack using following:
   //  sw(t0, CFunctionArgumentOperand(5));
-  
+
   // Calls a C function and cleans up the space for arguments allocated
   // by PrepareCallCFunction. The called function is not allowed to trigger a
   // garbage collection, since that might move the code and invalidate the