aarch64/strcmp: fix misaligned loop jump target

I accidentally set the loop jump back label as misaligned8 instead of
do_misaligned.  The typo is harmless but it's always nice to not have
to unnecessarily execute those two instructions.

	* sysdeps/aarch64/strcmp.S (do_misaligned): Jump back to
	do_misaligned, not misaligned8.

ChangeLog

@@ -1,3 +1,8 @@
+2018-02-22  Siddhesh Poyarekar  <[email protected]>
+
+	* sysdeps/aarch64/strcmp.S (do_misaligned): Jump back to
+	do_misaligned, not misaligned8.
+
 2018-02-22  Steve Ellcey  <[email protected]>
 
 	* sysdeps/aarch64/multiarch/Makefile (sysdep_routines):

sysdeps/aarch64/strcmp.S

@@ -158,7 +158,7 @@ L(do_misaligned):
 	ccmp	data1w, data2w, #0, cs	/* NZCV = 0b0000.  */
 	b.ne	L(done)
 	tst	src1, #7
-	b.ne	L(misaligned8)
+	b.ne	L(do_misaligned)
 
 L(loop_misaligned):
 	/* Test if we are within the last dword of the end of a 4K page.  If