Atom.startsWith() fails when the explicit parameter is greater in length than this Atom

[khatchad]

Exception is thrown when start's length is greater than this Atoms length.

WALA/com.ibm.wala.core/src/com/ibm/wala/util/strings/Atom.java

Lines 173 to 182 in d29e278

	public final boolean startsWith(Atom start) {
	assert (start != null);
	for (int i = 0; i < start.val.length; ++i) {
	if (val[i] != start.val[i])
	return false;
	}
	return true;
	}