Fix this.

[todo]

c-bootstrap/src/targets/GenerateX64.cpp

Lines 185 to 190 in cd9a7e1

	bo.lhs->exprType->getBytes(), 1); // HACKY. TODO: Fix this.
	x64.mov(x64.rcx, genIntValue(0), "Set rcx to all 0");
	x64.mov(lhsReg, lhsOperand);
	} else {
	x64.mov(x64.rcx, lhsOperand);
	}

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This issue was generated by todo based on a TODO comment in cd9a7e1 when #151 was merged. cc @rdtscp.