If the guy is tall, the girls height most likely won't bother him. In general, guys prefer women who are shorter than them. Some won't mind a girl a few inches taller than them, but many find that too intimidating/uncomfortable.
I'm 5'10". I've been approached by guys who are shorter than me - so there ARE guys out there that honestly don't care, and some who in fact prefer taller women. It comes down to preference, and different guys prefer different things. The guy I like now is my height - you'll find that if it doesn't bother the girl, it most likely won't bother the guy (and vice versa).
Rock your height :) Many girls would kill to be tall. I know it can be a pain, sometimes I feel like a giraffe. But at the end of the day, you can't change your height. You have to embrace it. You'll definitely have no trouble finding a dude who likes tall women, or doesn't consider height to be an important factor.