Add a missing space

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179525 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Driver/Options.td

@@ -405,7 +405,7 @@ def fsanitize_EQ : CommaJoined<["-"], "fsanitize=">, Group<f_clang_Group>,
 def fno_sanitize_EQ : CommaJoined<["-"], "fno-sanitize=">, Group<f_clang_Group>;
 def fsanitize_address_zero_base_shadow : Flag<["-"], "fsanitize-address-zero-base-shadow">,
                                          Group<f_clang_Group>, Flags<[CC1Option]>,
-                                         HelpText<"Make AddressSanitizer map shadow memory"
+                                         HelpText<"Make AddressSanitizer map shadow memory "
                                                   "at zero offset">;
 def fno_sanitize_address_zero_base_shadow : Flag<["-"], "fno-sanitize-address-zero-base-shadow">,
                                             Group<f_clang_Group>;