Fix "the the" in comments.

llvm-svn: 240112
diff --git a/llvm/unittests/Support/AllocatorTest.cpp b/llvm/unittests/Support/AllocatorTest.cpp
index 38c7fcb..4b54464 100644
--- a/llvm/unittests/Support/AllocatorTest.cpp
+++ b/llvm/unittests/Support/AllocatorTest.cpp
@@ -129,7 +129,7 @@
 
   // Aligning the current slab pointer is likely to move it past the end of the
   // slab, which would confuse any unsigned comparisons with the difference of
-  // the the end pointer and the aligned pointer.
+  // the end pointer and the aligned pointer.
   Alloc.Allocate(1024, 8192);
 
   EXPECT_EQ(2U, Alloc.GetNumSlabs());