Fix a Clang self-assign warning by casting result to void

diff --git a/src/subprocess.cc b/src/subprocess.cc
index c2e306c..005d368 100644 (file)
--- a/src/subprocess.cc
+++ b/src/subprocess.cc
@@ -75,8 +75,8 @@ bool Subprocess::Start(SubprocessSet* set, const string& command) {
     // If we get here, something went wrong; the execl should have
     // replaced us.
     char* err = strerror(errno);
-    int unused = write(error_pipe, err, strlen(err));
-    unused = unused;  // If the write fails, there's nothing we can do.
+    // If the write fails, there's nothing we can do.
+    (void) write(error_pipe, err, strlen(err));
     _exit(1);
   }