Fixed typo in sdl2-config.cmake.in (thanks, Rafal!). Partially fixes Bugzilla #3208.
diff --git a/sdl2-config.cmake.in b/sdl2-config.cmake.in
index c054767..e5a036a 100644
--- a/sdl2-config.cmake.in
+++ b/sdl2-config.cmake.in
@@ -2,7 +2,7 @@
set(prefix "@prefix@")
set(exec_prefix "@exec_prefix@")
-set(libdir "@libdir")
+set(libdir "@libdir@")
set(SDL2_PREFIX "@prefix@")
set(SDL2_EXEC_PREFIX "@prefix@")
set(SDL2_LIBDIR "@libdir@")