Add a 'struct stat' forward declaration to fix a compilation warning

ChangeLog

@@ -1,3 +1,7 @@
+2008-01-02  Guillem Jover  <guillem@debian.org>
+
+	* src/main.h (struct stat): New forward declaration.
+
 2008-01-02  Guillem Jover  <guillem@debian.org>
 
 	* lib/dpkg.h (warningf): Add PRINTFFORMAT attribute.

src/main.h

@@ -178,6 +178,8 @@ void cu_closepipe(int argc, void **argv);
 void cu_closedir(int argc, void **argv);
 void cu_closefd(int argc, void **argv);
 
+struct stat;
+
 int ignore_depends(struct pkginfo *pkg);
 int force_breaks(struct deppossi *possi);
 int force_depends(struct deppossi *possi);