widl: Remove an unnecessary platform specific ifdef

These files don't seem to need anything from malloc.h; they
include alloca.h for that function anyway, and stdlib.h provides
malloc and free. (Build tested for linux and mingw.)

This fixes building on other BSDs.

Signed-off-by: Martin Storsjö <martin@martin.st>

mingw-w64-tools/widl/include/pathtools.h

diff --git a/mingw-w64-tools/widl/include/pathtools.h b/mingw-w64-tools/widl/include/pathtools.h
index 139b7c2..34777bf 100644
--- a/mingw-w64-tools/widl/include/pathtools.h
+++ b/mingw-w64-tools/widl/include/pathtools.h
@@ -12,11 +12,7 @@
 #define PATHTOOLS_H
 
 #include <unistd.h>
-#if defined(__APPLE__)
 #include <stdlib.h>
-#else
-#include <malloc.h>
-#endif
 #include <stdio.h>
 
 char * malloc_copy_string(char const * original);

mingw-w64-tools/widl/src/pathtools.c

diff --git a/mingw-w64-tools/widl/src/pathtools.c b/mingw-w64-tools/widl/src/pathtools.c
index d85a7a2..d3c5d07 100644
--- a/mingw-w64-tools/widl/src/pathtools.c
+++ b/mingw-w64-tools/widl/src/pathtools.c
@@ -8,11 +8,7 @@
   .email: <mingw.android@gmail.com>.
  */
 
-#if defined(__APPLE__)
 #include <stdlib.h>
-#else
-#include <malloc.h>
-#endif
 #include <limits.h>
 #include <stdio.h>
 #include <string.h>