Fix typo in file extension for Objective-C++ code.

diff --git a/bin/blhc b/bin/blhc
index 91b6f3506ab2207c109da724a0149ebe216ee2e8..44a698683dc20a65462927a880ec83b1f714cb9c 100755 (executable)
--- a/bin/blhc
+++ b/bin/blhc
@@ -48,7 +48,7 @@ my @source_preprocess_compile_cpp = (
     # C++
     qw( cc cp cxx cpp CPP c++ C ),
     # Objective-C++
-    qw( mm Mr),
+    qw( mm M ),
 );
 my @source_preprocess_compile = (
     # C