u_setMemoryFunctions-callconvention-anachronism-msvc.diff

Don't annotate function parameters with call-convention modifier to work around a MSVC compiler warning.

https://ssl.icu-project.org/trac/ticket/13030

diff --git a/intl/icu/source/common/unicode/uclean.h b/intl/icu/source/common/unicode/uclean.h
--- a/intl/icu/source/common/unicode/uclean.h
+++ b/intl/icu/source/common/unicode/uclean.h
@@ -143,19 +143,25 @@ typedef void  U_CALLCONV UMemFreeFn (con
  *                 are called.
  *  @param a       Pointer to a user-supplied malloc function.
  *  @param r       Pointer to a user-supplied realloc function.
  *  @param f       Pointer to a user-supplied free function.
  *  @param status  Receives error values.
  *  @stable ICU 2.8
  *  @system
  */  
+#ifndef _MSC_VER
 U_STABLE void U_EXPORT2 
 u_setMemoryFunctions(const void *context, UMemAllocFn * U_CALLCONV a, UMemReallocFn * U_CALLCONV r, UMemFreeFn * U_CALLCONV f, 
                     UErrorCode *status);
+#else
+U_STABLE void U_EXPORT2 
+u_setMemoryFunctions(const void *context, UMemAllocFn * a, UMemReallocFn * r, UMemFreeFn * f, 
+                    UErrorCode *status);
+#endif
 
 U_CDECL_END
 
 #ifndef U_HIDE_DEPRECATED_API
 /*********************************************************************************
  *
  * Deprecated Functions
  *