Fixed patch matching to skip non-submodule dirs and empty applies.

CMakeLists.txt

@@ -21,16 +21,17 @@ foreach(_patch ${_submodule_patches})
     while(_n GREATER 0 AND NOT _applied)
         list(SUBLIST _parts 0 ${_n} _head)
         string(REPLACE ";" "_" _candidate "${_head}")
-        foreach(_root "" "Telegram/")
+        foreach(_root "Telegram/" "")
             set(_dir "${CMAKE_SOURCE_DIR}/${_root}${_candidate}")
-            if (IS_DIRECTORY ${_dir})
+            if (IS_DIRECTORY ${_dir} AND EXISTS ${_dir}/.git)
                 execute_process(
                     COMMAND git apply --check ${_patch}
                     WORKING_DIRECTORY ${_dir}
                     RESULT_VARIABLE _check_result
-                    OUTPUT_QUIET ERROR_QUIET
+                    OUTPUT_VARIABLE _check_output
+                    ERROR_VARIABLE _check_output
                 )
-                if (_check_result EQUAL 0)
+                if (_check_result EQUAL 0 AND NOT _check_output MATCHES "Skipped patch")
                     execute_process(
                         COMMAND git apply ${_patch}
                         WORKING_DIRECTORY ${_dir}