base_cpp: fixed missing include on linux

base_cpp/src/log.cc

@@ -28,7 +28,6 @@
 #include <embb/base/c/internal/unused.h>
 
 #include <cstdarg>
-#include <cstring>
 
 extern "C" void embb_log_write_internal(
   char const * channel,

base_cpp/test/log_test.cc

@@ -28,6 +28,8 @@
 #include <embb/base/c/internal/unused.h>
 #include <embb/base/log.h>
 
+#include <cstring>
+
 namespace embb {
 namespace base {
 namespace test {