Try to fix brain damage of cmake

contrib/hiredis/CMakeLists.txt

@@ -10,6 +10,6 @@ IF("${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" OR "${CMAKE_C_COMPILER_ID}" STREQUA
 	SET(HIREDIS_CFLAGS "${HIREDIS_CFLAGS} -O3")
 ENDIF()
 
-ADD_LIBRARY(rspamd-hiredis STATIC "${HIREDISSRC}")
+ADD_LIBRARY(rspamd-hiredis STATIC ${HIREDISSRC})
 
 SET_TARGET_PROPERTIES(rspamd-hiredis PROPERTIES COMPILE_FLAGS "${HIREDIS_CFLAGS}")