METIS_FOUND is never set.
Changed the commit to fit the setting of the other *_FOUND definitions.

Change-Id: I3f0d11a9a65a0decd1a6a6b28a4a4823eb74c9c3

cmake/FindSuiteSparse.cmake

diff --git a/cmake/FindSuiteSparse.cmake b/cmake/FindSuiteSparse.cmake
index b9729ab..05665a6 100644
--- a/cmake/FindSuiteSparse.cmake
+++ b/cmake/FindSuiteSparse.cmake
@@ -523,8 +523,10 @@
   PATHS ${SUITESPARSE_CHECK_LIBRARY_DIRS})
 IF (EXISTS ${METIS_LIBRARY})
   MESSAGE(STATUS "Found METIS library: ${METIS_LIBRARY}.")
+  set(METIS_FOUND TRUE)
 ELSE (EXISTS ${METIS_LIBRARY})
   MESSAGE(STATUS "Did not find METIS library (optional SuiteSparse dependency)")
+  set(METIS_FOUND FALSE)
 ENDIF (EXISTS ${METIS_LIBRARY})
 MARK_AS_ADVANCED(METIS_LIBRARY)