contrib: fix cryptopp Android patch on macOS

Change-Id: I68fe358486ca4e023057bf625f7de63c887a4bb6

contrib/src/cryptopp/cmake-crosscompile.patch

---- a/CMakeLists.txt
-+++ b/CMakeLists.txt.patched
-@@ -39,12 +39,7 @@ set(CRYPTOPP_DATA_DIR "" CACHE PATH "Crypto++ test data directory")
- # Always 1 ahead in Master. Also see http://groups.google.com/forum/#!topic/cryptopp-users/SFhqLDTQPG4
+--- a/CMakeLists.txt	2016-09-21 02:41:26.000000000 -0400
++++ b/CMakeLists.txt	2017-07-23 09:54:00.000000000 -0400
+@@ -40,11 +40,7 @@
  set(LIB_VER ${cryptopp_VERSION_MAJOR}${cryptopp_VERSION_MINOR}${cryptopp_VERSION_PATCH})
  
--# Only set when cross-compiling, http://www.vtk.org/Wiki/CMake_Cross_Compiling
+ # Only set when cross-compiling, http://www.vtk.org/Wiki/CMake_Cross_Compiling
 -if (NOT (CMAKE_SYSTEM_VERSION AND CMAKE_SYSTEM_PROCESSOR))
 -	set(CRYPTOPP_CROSS_COMPILE 1)
 -else()