sysconf(): Fix line parser for /proc files.

Change-Id: I2678010ee95933de19c8a8e3b2fe65ceb9b86400
diff --git a/libc/docs/CHANGES.TXT b/libc/docs/CHANGES.TXT
index c8bdb6f..8bfa61e 100644
--- a/libc/docs/CHANGES.TXT
+++ b/libc/docs/CHANGES.TXT
@@ -13,6 +13,9 @@
 - <sys/sysinfo.h>: Added missing sysinfo() system call implementation
   (the function was already declared in the header though).
 
+- sysconf() didn't work for some arguments due to a small bug in the
+  /proc line parser.
+
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 Differences between Android 2.2. and Android 2.1: