refix recompaction

Like all untested quick fixes, my previous quick fix actually introduced
a reliable segfault.

diff --git a/src/build_log.cc b/src/build_log.cc
index 2050ffc3deacd9ec57f0f41d4c50613c91e5fbb0..2a99cb4bbc158d344ad13c9cb58f9000ddeccf95 100644 (file)
--- a/src/build_log.cc
+++ b/src/build_log.cc
@@ -206,7 +206,7 @@ bool BuildLog::Recompact(const string& path, string* err) {
     return false;
   }
 
-  if (fwrite(kFileSignature, sizeof(kFileSignature) - 1, 1, log_file_) < 1) {
+  if (fwrite(kFileSignature, sizeof(kFileSignature) - 1, 1, f) < 1) {
     *err = strerror(errno);
     return false;
   }