nlsr: Update

Change-Id: I0d1d16b02da4ecaa717263da71f1611312e9a1e4
diff --git a/nlsr/debian/rules b/nlsr/debian/rules
index 8ce273d..472a2cf 100755
--- a/nlsr/debian/rules
+++ b/nlsr/debian/rules
@@ -11,7 +11,7 @@
 
 LDFLAGS := $(shell dpkg-buildflags --get LDFLAGS)
 CXXFLAGS := $(shell dpkg-buildflags --get CXXFLAGS)
-CXXFLAGS += -std=c++11
+CXXFLAGS += -std=c++14
 LIBDIR := /usr/lib/$(shell dpkg-architecture -qDEB_HOST_MULTIARCH)
 
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