nimble/sm: Fix passing uninitialized variable
nimble/sm: Fix passing uninitialized variable

X-Original-Commit: 5efb3f49c5d69dca5679e4cbbe83b63f2cd96166

apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble