Fix some files that got left behind in early changeset to unnamed unions fix. Credit to Roman Divacky.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@80913 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/floatuntixf.c b/lib/floatuntixf.c
index 5a48caf..e82d0c1 100644
--- a/lib/floatuntixf.c
+++ b/lib/floatuntixf.c
@@ -76,7 +76,7 @@
         /* a is now rounded to LDBL_MANT_DIG bits */
     }
     long_double_bits fb;
-    fb.u.high.low = (e + 16383);                  /* exponent */
+    fb.u.high.s.low = (e + 16383);                  /* exponent */
     fb.u.low.all = (du_int)a;                     /* mantissa */
     return fb.f;
 }