vulkaninfo: fix memory leaks from pNext chains

Change-Id: I99965dabaf7307e52c56f779d79f259fc379c7da
diff --git a/vulkaninfo/vulkaninfo.c b/vulkaninfo/vulkaninfo.c
index c499937..5103e79 100644
--- a/vulkaninfo/vulkaninfo.c
+++ b/vulkaninfo/vulkaninfo.c
@@ -1281,6 +1281,7 @@
         free(gpu->queue_props2);
 
         freepNextChain(gpu->props2.pNext);
+        freepNextChain(gpu->memory_props2.pNext);
     }
 }
 
@@ -2130,6 +2131,7 @@
                 }
                 place = work->pNext;
             }
+            freepNextChain(surface_capabilities2.pNext);
         }
         if (html_output) {
             fprintf(out, "\t\t\t\t\t</details>\n");