[Minor] Never use pkg-config for jemalloc - it breaks things

CMakeLists.txt

@@ -628,7 +628,7 @@ ENDIF(ENABLE_LUAJIT MATCHES "ON")
 
 IF(ENABLE_JEMALLOC MATCHES "ON")
 	ProcessPackage(JEMALLOC LIBRARY jemalloc_pic jemalloc INCLUDE jemalloc.h INCLUDE_SUFFIXES include/jemalloc
-		ROOT ${JEMALLOC_ROOT_DIR} MODULES jemalloc)
+		ROOT ${JEMALLOC_ROOT_DIR})
 	SET(WITH_JEMALLOC "1")
 	LIST(APPEND RSPAMD_REQUIRED_LIBRARIES "-lpthread")
 ENDIF()