Merge "Fix static analyzer warnings."

am: 4b547a15

Change-Id: Id5b85ec29220cdbc15aab72ddf4dfbd2d4ef2fc7

tools/sepolicy-analyze/neverallow.c

@@ -258,6 +258,7 @@ static int read_classperms(policydb_t *policydb, char **ptr, char *end,
         node->next = classperms;
         classperms = node;
         free(id);
+        id = NULL;
     } while (p < end && openparens);
 
     if (p == end)
@@ -325,6 +326,8 @@ static int read_classperms(policydb_t *policydb, char **ptr, char *end,
         if (!strcmp(id, "*")) {
             for (node = classperms; node; node = node->next)
                 node->data = ~0;
+            free(id);
+            id = NULL;
             continue;
         }
 
@@ -341,6 +344,7 @@ static int read_classperms(policydb_t *policydb, char **ptr, char *end,
             node->data |= 1U << (perm->s.value - 1);
         }
         free(id);
+        id = NULL;
     } while (p < end && openparens);
 
     if (p == end)
@@ -361,6 +365,12 @@ static int read_classperms(policydb_t *policydb, char **ptr, char *end,
     *ptr = p;
     return 0;
 err:
+    // free classperms memory
+    for (node = classperms; node; ) {
+      class_perm_node_t *freeptr = node;
+      node = node->next;
+      free(freeptr);
+    }
     return -1;
 }