[presubmit] Fix whitespace/semicolon linter violations.

test/cctest/test-code-stubs-x64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Rrdistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Rrdistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Rrdistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 56 matching lines @@
     // stack-allocated and offset-wise made to look like a heap number for
     // the stub.  We create that "heap number" after pushing all allocatable
     // registers.
     int double_argument_slot =
         (Register::NumAllocatableRegisters() - 1) * kPointerSize + kDoubleSize;
     __ leaq(source_reg, MemOperand(rsp, -double_argument_slot - offset));
   }
 
   // Save registers make sure they don't get clobbered.
   int reg_num = 0;
-  for (;reg_num < Register::NumAllocatableRegisters(); ++reg_num) {
+  for (; reg_num < Register::NumAllocatableRegisters(); ++reg_num) {
     Register reg = Register::FromAllocationIndex(reg_num);
     if (!reg.is(rsp) && !reg.is(rbp) && !reg.is(destination_reg)) {
       __ pushq(reg);
     }
   }
 
   // Put the double argument into the designated double argument slot.
   __ subq(rsp, Immediate(kDoubleSize));
   __ movsd(MemOperand(rsp, 0), xmm0);
 
@@ skipping 54 matching lines @@
 
   for (size_t s = 0; s < sizeof(source_registers) / sizeof(Register); s++) {
     for (size_t d = 0; d < sizeof(dest_registers) / sizeof(Register); d++) {
       RunAllTruncationTests(
           MakeConvertDToIFuncTrampoline(isolate,
                                         source_registers[s],
                                         dest_registers[d]));
     }
   }
 }