Merge pull request #28226 from mrc0mmand/coverity-fixes

A couple of Coverity-related fixes

src/basic/process-util.c

@@ -1095,7 +1095,7 @@ pid_t getpid_cached(void) {
          * https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c579f48edba88380635ab98cb612030e3ed8691e
          */
 
-        __atomic_compare_exchange_n(
+        (void) __atomic_compare_exchange_n(
                         &cached_pid,
                         &current_value,
                         CACHED_PID_BUSY,

src/basic/virt.c

@@ -492,8 +492,6 @@ Virtualization detect_vm(void) {
                         return xen_dom0;
                 if (xen_dom0 == 0)
                         goto finish;
-
-                v = VIRTUALIZATION_NONE;
         } else if (v != VIRTUALIZATION_NONE)
                 assert_not_reached();