fix define MTRACE 1 build bug

4c44936f · Silas Boyd-Wickizer · 4ec2e3db · 4c44936f
--- a/kernel/kalloc.cc
+++ b/kernel/kalloc.cc
@@ -114,9 +114,11 @@ pgalloc(void)
 run*
 kmem::alloc(const char* name)
 {
+  run* r;
+
  for (;;) {
    auto headval = freelist.load();
-    run* r = headval.ptr();
+    r = headval.ptr();
    if (!r)
      return nullptr;
    
@@ -131,7 +133,7 @@ kmem::alloc(const char* name)
  }

  if (name)
-    mtlabel(mtrace_label_block, r, m->size, name, strlen(name));
+    mtlabel(mtrace_label_block, r, size, name, strlen(name));
 }

 void