Fix typos, noticed by Clang.

llvm-svn: 113061
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 0a779b97fe56483b40ea8074f4a5d7fb8eb058a1
diff --git a/src/chrono.cpp b/src/chrono.cpp
index 606a6ad..dee6580 100644
--- a/src/chrono.cpp
+++ b/src/chrono.cpp
@@ -94,7 +94,7 @@
     return &monotonic_full;
 }
 
-#pragma GCC visiblity pop
+#pragma GCC visibility pop
 
 monotonic_clock::time_point
 monotonic_clock::now()