lxc: Add coverity[dead_error_begin] tag in switch stmts

The use of switch statements inside a bounded for loop resulted in some
false positives regarding the "default:" label which cannot be reached
since each of the other case statements use the possible for loop values.

src/lxc/lxc_driver.c

@@ -920,6 +920,7 @@ lxcDomainGetMemoryParameters(virDomainPtr dom,
                 goto cleanup;
             break;
 
+        /* coverity[dead_error_begin] */
         default:
             break;
             /* should not hit here */
@@ -2175,6 +2176,7 @@ lxcDomainGetBlkioParameters(virDomainPtr dom,
                     goto cleanup;
                 break;
 
+            /* coverity[dead_error_begin] */
             default:
                 break;
                 /* should not hit here */
@@ -2192,6 +2194,7 @@ lxcDomainGetBlkioParameters(virDomainPtr dom,
                     goto cleanup;
                 break;
 
+            /* coverity[dead_error_begin] */
             default:
                 break;
                 /* should not hit here */