Correct atan/exp/tanh errno setting (try 2)

[Zheng Chen]

The last one was damaged by my email client.

Thanks Piotr for pointting out.
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From daa7cc921e21c20d0f6b4a89e6aa18757fab182b Mon Sep 17 00:00:00 2001
From: Kevin Chan <ChanChengCC at gmail.com>
Date: Tue, 24 Mar 2015 09:04:14 +0000
Subject: msvcrt: Correct atan/exp/tanh errno setting

---
 dlls/msvcrt/math.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/dlls/msvcrt/math.c b/dlls/msvcrt/math.c
index acac35d..73f01aa 100644
--- a/dlls/msvcrt/math.c
+++ b/dlls/msvcrt/math.c
@@ -363,7 +363,7 @@ double CDECL MSVCRT_asin( double x )
  */
 double CDECL MSVCRT_atan( double x )
 {
-  if (!isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
+  if (isnan(x)) *MSVCRT__errno() = MSVCRT_EDOM;
   return atan(x);
 }
 
@@ -399,7 +399,7 @@ double CDECL MSVCRT_cosh( double x )
  */
 double CDECL MSVCRT_exp( double x )
 {
-  if (!isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
+  if (isnan(x)) *MSVCRT__errno() = MSVCRT_EDOM;
   return exp(x);
 }
 
@@ -484,7 +484,7 @@ double CDECL MSVCRT_tan( double x )
  */
 double CDECL MSVCRT_tanh( double x )
 {
-  if (!isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
+  if (isnan(x)) *MSVCRT__errno() = MSVCRT_EDOM;
   return tanh(x);
 }
 
-- 
2.3.3