Fix a typo that resulted in a crash in the boot sequence

libc/bionic/pthread.c

diff --git a/libc/bionic/pthread.c b/libc/bionic/pthread.c
index ccc91d0..42f5f4c 100644
--- a/libc/bionic/pthread.c
+++ b/libc/bionic/pthread.c
@@ -1138,7 +1138,7 @@
         ts->tv_sec--;
         ts->tv_nsec += 1000000000;
     }
-    if ((ts->tv_nsec < 0) || (ts->tv_nsec < 0))
+    if ((ts->tv_nsec < 0) || (ts->tv_sec < 0))
         return -1;
 
     return 0;