Fix typos (#1194)

diff --git a/src/sysinfo.cc b/src/sysinfo.cc
index abe49ba..88115d7 100644
--- a/src/sysinfo.cc
+++ b/src/sysinfo.cc
@@ -545,7 +545,7 @@
   // cannot always be relied upon. The same reasons apply to /proc/cpuinfo as
   // well.
   if (ReadFromFile("/sys/devices/system/cpu/cpu0/tsc_freq_khz", &freq)
-      // If CPU scaling is disabled, use the the *current* frequency.
+      // If CPU scaling is disabled, use the *current* frequency.
       // Note that we specifically don't want to read cpuinfo_cur_freq,
       // because it is only readable by root.
       || (scaling == CPUInfo::Scaling::DISABLED &&