fixed wrong quotes when setting the TINE_EXPORT C preprocessor symbol to a space

cmake/Modules/FindDOOCS.cmake

@@ -64,7 +64,7 @@ set(DOOCS_LIBRARIES ${DOOCS_LIBRARIES} DOOCSapi nsl dl pthread m rt ldap)
 set(DOOCS_INCLUDE_DIRS ${DOOCS_DIR}/include)
 set(DOOCS_LIBRARY_DIRS ${DOOCS_DIR}/)
 
-set(DOOCS_CXX_FLAGS "-Wall -fPIC -D_REENTRANT -DLINUX -D__LINUX__ -DDMSG -DTINE_EXPORT=\" \"")
+set(DOOCS_CXX_FLAGS "-Wall -fPIC -D_REENTRANT -DLINUX -D__LINUX__ -DDMSG -DTINE_EXPORT=' '")
 set(DOOCS_LINKER_FLAGS "-Wl,--no-as-needed")
 set(DOOCS_LINK_FLAGS "${DOOCS_LINKER_FLAGS}")