fix a typo
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154920 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
index 6769756..27102d8 100644
--- a/lib/Driver/ToolChains.cpp
+++ b/lib/Driver/ToolChains.cpp
@@ -1103,7 +1103,7 @@
/// \brief Construct a GCCInstallationDetector from the driver.
///
/// This performs all of the autodetection and sets up the various paths.
-/// Once constructed, a GCCInstallation is esentially immutable.
+/// Once constructed, a GCCInstallationDetector is essentially immutable.
///
/// FIXME: We shouldn't need an explicit TargetTriple parameter here, and
/// should instead pull the target out of the driver. This is currently