Fixed spelling & grammar.

llvm-svn: 8559
diff --git a/llvm/lib/Support/CommandLine.cpp b/llvm/lib/Support/CommandLine.cpp
index e9793d6..2d57abd 100644
--- a/llvm/lib/Support/CommandLine.cpp
+++ b/llvm/lib/Support/CommandLine.cpp
@@ -330,7 +330,7 @@
 
       if (*ArgName == 0 && !DashDashFound) {   // Is this the mythical "--"?
         DashDashFound = true;  // Yup, take note of that fact...
-        continue;              // Don't try to process it as an argument iself.
+        continue;              // Don't try to process it as an argument itself.
       }
 
       const char *ArgNameEnd = ArgName;