util: file: define cleanup function using VIR_DEFINE_AUTOPTR_FUNC

Using the new VIR_DEFINE_AUTOPTR_FUNC macro defined in
src/util/viralloc.h, define a new wrapper around an existing
cleanup function which will be called when a variable declared
with VIR_AUTOPTR macro goes out of scope.  Also, drop the redundant
viralloc.h include, since that has moved from the source module into the
header.

When a variable of type virFileWrapperFdPtr is declared using
VIR_AUTOPTR, the function virFileWrapperFdFree will be run
automatically on it when it goes out of scope.
Signed-off-by: NSukrit Bhatnagar <skrtbhtngr@gmail.com>
Reviewed-by: NErik Skultety <eskultet@redhat.com>

src/util/virfile.c

@@ -67,7 +67,6 @@
 
 #include "configmake.h"
 #include "intprops.h"
-#include "viralloc.h"
 #include "vircommand.h"
 #include "virerror.h"
 #include "virfile.h"

src/util/virfile.h

@@ -32,6 +32,7 @@
 # include "internal.h"
 # include "virbitmap.h"
 # include "virstoragefile.h"
+# include "viralloc.h"
 
 typedef enum {
     VIR_FILE_CLOSE_PRESERVE_ERRNO = 1 << 0,
@@ -367,4 +368,6 @@ int virFileInData(int fd,
                   int *inData,
                   long long *length);
 
+VIR_DEFINE_AUTOPTR_FUNC(virFileWrapperFd, virFileWrapperFdFree)
+
 #endif /* __VIR_FILE_H */