docs: fix layout of code snippets

Similar to commit 52dbeac8, we should indent code snippets in
other places to ensure they appear correctly in html.  See
http://libvirt.org/html/libvirt-libvirt.html#virNodeGetCPUStats
for an example improved by this patch.  Also fix some missing
semicolons in the examples.

* src/libvirt.c: Indent code samples in comments.
Signed-off-by: NEric Blake <eblake@redhat.com>

src/libvirt.c

@@ -7629,8 +7629,8 @@ error:
  *
  * Here is a sample code snippet:
  *
- * if ((virNodeGetCPUStats(conn, cpuNum, NULL, &nparams, 0) == 0) &&
- *     (nparams != 0)) {
+ *   if (virNodeGetCPUStats(conn, cpuNum, NULL, &nparams, 0) == 0 &&
+ *       nparams != 0) {
  *       if ((params = malloc(sizeof(virNodeCPUStats) * nparams)) == NULL)
  *           goto error;
  *       memset(params, 0, sizeof(virNodeCPUStats) * nparams);
@@ -7722,8 +7722,8 @@ error:
  *
  * Here is the sample code snippet:
  *
- * if ((virNodeGetMemoryStats(conn, cellNum, NULL, &nparams, 0) == 0) &&
- *     (nparams != 0)) {
+ *   if (virNodeGetMemoryStats(conn, cellNum, NULL, &nparams, 0) == 0 &&
+ *       nparams != 0) {
  *       if ((params = malloc(sizeof(virNodeMemoryStats) * nparams)) == NULL)
  *           goto error;
  *       memset(params, cellNum, 0, sizeof(virNodeMemoryStats) * nparams);
@@ -9381,23 +9381,20 @@ error:
  * on each array element, then calling free() on @domains.
  *
  * Example of usage:
+ *
  *   virDomainPtr *domains;
  *   size_t i;
  *   int ret;
  *   unsigned int flags = VIR_CONNECT_LIST_DOMAINS_RUNNING |
  *                        VIR_CONNECT_LIST_DOMAINS_PERSISTENT;
- *
  *   ret = virConnectListAllDomains(conn, &domains, flags);
  *   if (ret < 0)
  *       error();
- *
  *   for (i = 0; i < ret; i++) {
  *        do_something_with_domain(domains[i]);
- *
  *        //here or in a separate loop if needed
  *        virDomainFree(domains[i]);
  *   }
- *
  *   free(domains);
  */
 int
@@ -17023,7 +17020,7 @@ virStreamRef(virStreamPtr stream)
  * API looks like
  *
  *     virStreamPtr st = virStreamNew(conn, 0);
- *     int fd = open("demo.iso", O_RDONLY)
+ *     int fd = open("demo.iso", O_RDONLY);
  *
  *     virConnectUploadFile(conn, "demo.iso", st);
  *
@@ -17040,7 +17037,7 @@ virStreamRef(virStreamPtr stream)
  *          }
  *          int offset = 0;
  *          while (offset < got) {
- *             int sent = virStreamSend(st, buf+offset, got-offset)
+ *             int sent = virStreamSend(st, buf+offset, got-offset);
  *             if (sent < 0) {
  *                virStreamAbort(st);
  *                goto done;
@@ -17117,7 +17114,7 @@ error:
  * API looks like
  *
  *     virStreamPtr st = virStreamNew(conn, 0);
- *     int fd = open("demo.iso", O_WRONLY, 0600)
+ *     int fd = open("demo.iso", O_WRONLY, 0600);
  *
  *     virConnectDownloadFile(conn, "demo.iso", st);
  *
@@ -17132,7 +17129,7 @@ error:
  *         }
  *         int offset = 0;
  *         while (offset < got) {
- *            int sent = write(fd, buf+offset, got-offset)
+ *            int sent = write(fd, buf + offset, got - offset);
  *            if (sent < 0) {
  *               virStreamAbort(st);
  *               goto done;
@@ -17216,7 +17213,7 @@ error:
  *   }
  *
  *   virStreamPtr st = virStreamNew(conn, 0);
- *   int fd = open("demo.iso", O_RDONLY)
+ *   int fd = open("demo.iso", O_RDONLY);
  *
  *   virConnectUploadFile(conn, st);
  *   if (virStreamSendAll(st, mysource, &fd) < 0) {
@@ -17313,7 +17310,7 @@ cleanup:
  *   }
  *
  *   virStreamPtr st = virStreamNew(conn, 0);
- *   int fd = open("demo.iso", O_WRONLY)
+ *   int fd = open("demo.iso", O_WRONLY);
  *
  *   virConnectUploadFile(conn, st);
  *   if (virStreamRecvAll(st, mysink, &fd) < 0) {