dev/rnd.c uiovmove() conversion

[Martin Natano]

Below, a diff to convert dev/rnd.c to use uiomove().

cheers,
natano

Index: dev/rnd.c
===================================================================
RCS file: /cvs/src/sys/dev/rnd.c,v
retrieving revision 1.177
diff -u -p -u -r1.177 rnd.c
--- dev/rnd.c   28 Dec 2015 05:21:53 -0000      1.177
+++ dev/rnd.c   1 Jan 2016 12:59:34 -0000
@@ -840,7 +840,7 @@ randomread(dev_t dev, struct uio *uio, i
        }
 
        while (ret == 0 && uio->uio_resid > 0) {
-               int     n = ulmin(POOLBYTES, uio->uio_resid);
+               size_t  n = ulmin(POOLBYTES, uio->uio_resid);
 
                if (myctx) {
 #ifndef KEYSTREAM_ONLY
@@ -849,7 +849,7 @@ randomread(dev_t dev, struct uio *uio, i
                        chacha_encrypt_bytes(&lctx, buf, buf, n);
                } else
                        arc4random_buf(buf, n);
-               ret = uiomovei(buf, n, uio);
+               ret = uiomove(buf, n, uio);
                if (ret == 0 && uio->uio_resid > 0)
                        yield();
        }
@@ -872,9 +872,9 @@ randomwrite(dev_t dev, struct uio *uio, 
        buf = malloc(POOLBYTES, M_TEMP, M_WAITOK);
 
        while (ret == 0 && uio->uio_resid > 0) {
-               int     n = ulmin(POOLBYTES, uio->uio_resid);
+               size_t  n = ulmin(POOLBYTES, uio->uio_resid);
 
-               ret = uiomovei(buf, n, uio);
+               ret = uiomove(buf, n, uio);
                if (ret != 0)
                        break;
                while (n % sizeof(u_int32_t))