Fix some compilation warnings on FreeBSD hosts

Signed-off-by: NJuergen Lock <nox@jelal.kn-bremen.de>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

qemu-char.c

@@ -1369,7 +1369,7 @@ static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
 {
-    int fd = (int)chr->opaque;
+    int fd = (int)(long)chr->opaque;
     uint8_t b;
 
     switch(cmd) {
@@ -1415,7 +1415,7 @@ static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
         return NULL;
 
     chr = qemu_mallocz(sizeof(CharDriverState));
-    chr->opaque = (void *)fd;
+    chr->opaque = (void *)(long)fd;
     chr->chr_write = null_chr_write;
     chr->chr_ioctl = pp_ioctl;
     return chr;