dlopen libdrmgr.so in arm return 0

Created by: evilzhou

test code: auto lib = dlopen("/data/data/com.xxx/lib/libdynamorio.so", RTLD_LAZY); LOGD("111 %p %s", lib, dlerror()); lib = dlopen("/data/data/com.xxx/lib/libdrmgr.so", RTLD_LAZY); LOGD("222 %p %s", lib, dlerror());

log: 04-08 17:50:17.243 19282 19282 D XMONO : 111 0xe88e71d0 (null) 04-08 17:50:17.243 19282 19282 D XMONO : 222 0x0 dlopen failed: cannot locate symbol "memmove" referenced by "/data/app/com.tencent.securityradar-2/lib/arm/libdrmgr.so"...