fix typo in the _MSC_VER define (was written as MSC_VER, which is wrong)

Author: GerHobbelt

ChangeLog.md

@@ -467,7 +467,7 @@ pre-merge-with-mingw-patches / Wed, 30 Mar 2016
   * [b9afb8d2] Move recently incorrectly placed comment. (`Ross Johnson`)
   * [9f8c38b1] Version 2.9.0 last changes. (`Ross Johnson`)
   * [7452bc46] callbacks defined as cdecl (`Ross Johnson`)
-  * [473862a0] Fix MSC_VER related to item 2 in BUGS (`rpj`)
+  * [473862a0] Fix _MSC_VER related to item 2 in BUGS (`rpj`)
   * [b83397a7] Remove compile warning; fix bug (`rpj`)
   * [07078828] *** empty log message *** (`rpj`)
   * [d0616e87] Reorganisation of #defines (`rpj`)

docs/ChangeLog.md

@@ -2399,7 +2399,7 @@ General Note:
 2011-07-06  Ross Johnson <ross dot johnson at homemail dot com dot au>
 
 	* pthread_cond_wait.c (pragma inline_depth): this is almost redundant
-	now nevertheless fixed thei controlling MSC_VER from "< 800" to
+	now nevertheless fixed thei controlling _MSC_VER from "< 800" to
 	"< 1400" (i.e. any prior to VC++ 8.0).
 	* pthread_once.ci (pragma inline_depth): Likewise.
 	* pthread_rwlock_timedwrlock.ci (pragma inline_depth): Likewise.
@@ -5034,7 +5034,7 @@ General Note:
 2000-08-12  Ross Johnson  <rpj at special.ise.canberra.edu.au>
 
 	* pthread.h: Add compile-time message when using
-	MSC_VER compiler and C++ EH to warn application
+	_MSC_VER compiler and C++ EH to warn application
 	programmers to use __PtW32Catch instead of catch(...)
 	if they want cancellation and pthread_exit to work.