cmake: Fixed openssl detection.

Thanks to Xi Wang for the patch.

CMakeLists.txt

@@ -52,12 +52,12 @@ if (WITH_GCRYPT)
   endif (NOT GCRYPT_FOUND)
 else (WITH_GCRYPT)
   find_package(OpenSSL)
-  if (NOT CRYPTO_FOUND)
+  if (NOT OPENSSL_FOUND)
     find_package(GCrypt)
     if (NOT GCRYPT_FOUND)
       message(FATAL_ERROR "Could not find OpenSSL or GCrypt")
     endif (NOT GCRYPT_FOUND)
-  endif (NOT CRYPTO_FOUND)
+  endif (NOT OPENSSL_FOUND)
 endif(WITH_GCRYPT)
 
 # config.h checks

ConfigureChecks.cmake

@@ -82,9 +82,9 @@ endif (UNIX)
 set(LIBSSH_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} CACHE INTERNAL "libssh required system libraries")
 
 # LIBRARIES
-if (CRYPTO_FOUND)
+if (OPENSSL_FOUND)
   set(HAVE_LIBCRYPTO 1)
-endif (CRYPTO_FOUND)
+endif (OPENSSL_FOUND)
 
 if (GCRYPT_FOUND)
   set(HAVE_LIBGCRYPT 1)