Fix the comment: The ASCII code for tab is 9.

Change-Id: If356d2df2f76adb89c2ccd40c2f68cc6aefa1399
diff --git a/sources/cxx-stl/llvm-libc++/libcxx/src/support/android/locale_android.cpp b/sources/cxx-stl/llvm-libc++/libcxx/src/support/android/locale_android.cpp
index 4224231..7193028 100644
--- a/sources/cxx-stl/llvm-libc++/libcxx/src/support/android/locale_android.cpp
+++ b/sources/cxx-stl/llvm-libc++/libcxx/src/support/android/locale_android.cpp
@@ -17,7 +17,7 @@
 // Note that the header does define a _B flag (as 0x80), but it
 // is only set on the space (32) character, and used to implement
 // isprint() properly. The implementation of isblank() relies on
-// direct comparisons with 7 and 32 instead.
+// direct comparisons with 9 and 32 instead.
 //
 // The following is a local copy of the Bionic _ctype_ array that has
 // been modified in the following way:
@@ -25,7 +25,7 @@
 //   - It stores 16-bit unsigned values, instead of 8-bit char ones.
 //
 //   - Bit flag _BLANK (0x100) is used to indicate blank characters.
-//     It is only set for indices 7 (TAB) and 32 (SPACE).
+//     It is only set for indices 9 (TAB) and 32 (SPACE).
 //
 //   - Support signed char properly for indexing.