db/VHelper: include DetachedSong.hxx to fix GCC 9 build failure

GCC 9's libstdc++ is unable to use forward-declared types as std::vector item because the compiler wants to resolve `noexcept()` on the item destructor.

db/VHelper: include DetachedSong.hxx to fix GCC 9 build failure
037bb07d · Max Kellermann · 87635c52 · 037bb07d · 037bb07d
Commit 037bb07d authored Jan 21, 2019 by Max Kellermann
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VHelper.cxx src/db/VHelper.cxx +0 -1

VHelper.hxx src/db/VHelper.hxx +1 -0

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--- a/src/db/VHelper.cxx
+++ b/src/db/VHelper.cxx
@@ -18,7 +18,6 @@
 */

 #include "VHelper.hxx"
-#include "song/DetachedSong.hxx"
 #include "song/LightSong.hxx"
 #include "song/Filter.hxx"


--- a/src/db/VHelper.hxx
+++ b/src/db/VHelper.hxx
@@ -22,6 +22,7 @@

 #include "Visitor.hxx"
 #include "Selection.hxx"
+#include "song/DetachedSong.hxx"

 #include <vector>