modules: updated FindMagnum.cmake.

It was not handling the case of both debug and release libraries for
application and contexts properly.

modules/FindMagnum.cmake

@@ -627,7 +627,7 @@ if(_MAGNUM_WINDOWLESSAPPLICATION_ALIAS AND NOT TARGET Magnum::WindowlessApplicat
             INTERFACE_COMPILE_DEFINITIONS $<TARGET_PROPERTY:${_MAGNUM_WINDOWLESSAPPLICATION_ALIAS},INTERFACE_COMPILE_DEFINITIONS>
             INTERFACE_COMPILE_OPTIONS $<TARGET_PROPERTY:${_MAGNUM_WINDOWLESSAPPLICATION_ALIAS},INTERFACE_COMPILE_OPTIONS>
             INTERFACE_LINK_LIBRARIES $<TARGET_PROPERTY:${_MAGNUM_WINDOWLESSAPPLICATION_ALIAS},INTERFACE_LINK_LIBRARIES>
-            IMPORTED_CONFIGURATIONS ${_MAGNUM_WINDOWLESSAPPLICATION_IMPORTED_CONFIGURATIONS})
+            IMPORTED_CONFIGURATIONS "${_MAGNUM_WINDOWLESSAPPLICATION_IMPORTED_CONFIGURATIONS}")
         if(_MAGNUM_WINDOWLESSAPPLICATION_IMPORTED_LOCATION_RELEASE)
             set_target_properties(Magnum::WindowlessApplication PROPERTIES
                 IMPORTED_LOCATION_RELEASE ${_MAGNUM_WINDOWLESSAPPLICATION_IMPORTED_LOCATION_RELEASE})
@@ -657,7 +657,7 @@ if(_MAGNUM_APPLICATION_ALIAS AND NOT TARGET Magnum::Application)
             INTERFACE_COMPILE_DEFINITIONS $<TARGET_PROPERTY:${_MAGNUM_APPLICATION_ALIAS},INTERFACE_COMPILE_DEFINITIONS>
             INTERFACE_COMPILE_OPTIONS $<TARGET_PROPERTY:${_MAGNUM_APPLICATION_ALIAS},INTERFACE_COMPILE_OPTIONS>
             INTERFACE_LINK_LIBRARIES $<TARGET_PROPERTY:${_MAGNUM_APPLICATION_ALIAS},INTERFACE_LINK_LIBRARIES>
-            IMPORTED_CONFIGURATIONS ${_MAGNUM_APPLICATION_IMPORTED_CONFIGURATIONS})
+            IMPORTED_CONFIGURATIONS "${_MAGNUM_APPLICATION_IMPORTED_CONFIGURATIONS}")
         if(_MAGNUM_APPLICATION_IMPORTED_LOCATION_RELEASE)
             set_target_properties(Magnum::Application PROPERTIES
                 IMPORTED_LOCATION_RELEASE ${_MAGNUM_APPLICATION_IMPORTED_LOCATION_RELEASE})
@@ -687,7 +687,7 @@ if(_MAGNUM_CONTEXT_ALIAS AND NOT TARGET Magnum::Context)
             INTERFACE_COMPILE_DEFINITIONS $<TARGET_PROPERTY:${_MAGNUM_CONTEXT_ALIAS},INTERFACE_COMPILE_DEFINITIONS>
             INTERFACE_COMPILE_OPTIONS $<TARGET_PROPERTY:${_MAGNUM_CONTEXT_ALIAS},INTERFACE_COMPILE_OPTIONS>
             INTERFACE_LINK_LIBRARIES $<TARGET_PROPERTY:${_MAGNUM_CONTEXT_ALIAS},INTERFACE_LINK_LIBRARIES>
-            IMPORTED_CONFIGURATIONS ${_MAGNUM_CONTEXT_IMPORTED_CONFIGURATIONS})
+            IMPORTED_CONFIGURATIONS "${_MAGNUM_CONTEXT_IMPORTED_CONFIGURATIONS}")
         if(_MAGNUM_CONTEXT_IMPORTED_LOCATION_RELEASE)
             set_target_properties(Magnum::Context PROPERTIES
                 IMPORTED_LOCATION_RELEASE ${_MAGNUM_CONTEXT_IMPORTED_LOCATION_RELEASE})