add return statements missed when adapting from FreeBSD

Avoids segfaults with an argument of 0, NaN, or Inf.
Problem reported by Colin Ian King.  ok miod@ kettenis@

diff --git a/lib/libm/src/s_sincosl.c b/lib/libm/src/s_sincosl.c
index e89d30c..3afb1a9 100644 (file)
--- a/lib/libm/src/s_sincosl.c
+++ b/lib/libm/src/s_sincosl.c
@@ -72,12 +72,14 @@ sincosl(long double x, long double *sn, long double *cs)
                        *cs = 1;
                } else
                        __kernel_sincosl(x, 0, 0, sn, cs);
+               return;
        }
 
        /* If x = NaN or Inf, then sin(x) and cos(x) are NaN. */
        if (z.bits.ext_exp == 32767) {
                *sn = x - x;
                *cs = x - x;
+               return;
        }
 
        /* Split z.e into a 24-bit representation. */