OLP_SDK_ENABLE_IOS_BACKGROUND_DOWNLOAD IOS only (#1532)

Limiting users in adding options making no sense on some platforms
In addition adding include related to iOS changes appeared on Android
build no complains from XCode though.

Relates-To: DATASDK-19

Signed-off-by: Rustam Gamidov <ext-rustam.gamidov@here.com>

Author: rustam-gamidov-here

olp-cpp-sdk-core/CMakeLists.txt

@@ -411,7 +411,7 @@ endif()
 
 add_library(${PROJECT_NAME} ${OLP_SDK_CORE_SOURCES} ${OLP_SDK_CORE_HEADERS})
 
-if (OLP_SDK_ENABLE_IOS_BACKGROUND_DOWNLOAD)
+if (IOS AND OLP_SDK_ENABLE_IOS_BACKGROUND_DOWNLOAD)
     target_compile_definitions(${PROJECT_NAME}
         PUBLIC OLP_SDK_NETWORK_IOS_BACKGROUND_DOWNLOAD)
 endif()

olp-cpp-sdk-core/src/client/OlpClient.cpp

@@ -22,6 +22,9 @@
 #include <cctype>
 #include <chrono>
 #include <future>
+#ifdef OLP_SDK_NETWORK_IOS_BACKGROUND_DOWNLOAD
+#include <list>
+#endif  // OLP_SDK_NETWORK_IOS_BACKGROUND_DOWNLOAD
 #include <sstream>
 #include <thread>