package/opentracing-cpp: bump to version 1.6.0

Update indentation in hash file (two spaces)

https://github.com/opentracing/opentracing-cpp/releases/tag/v1.6.0

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/opentracing-cpp/opentracing-cpp.hash

@@ -1,3 +1,3 @@
 # Locally calculated
-sha256 015c4187f7a6426a2b5196f0ccd982aa87f010cf61f507ae3ce5c90523f92301 opentracing-cpp-1.5.1.tar.gz
-sha256 076d03156735d5ff2df2ea0f8b12351ef65e5e9222b5c8c6a35101dadb41e717 LICENSE
+sha256  5b170042da4d1c4c231df6594da120875429d5231e9baa5179822ee8d1054ac3  opentracing-cpp-1.6.0.tar.gz
+sha256  076d03156735d5ff2df2ea0f8b12351ef65e5e9222b5c8c6a35101dadb41e717  LICENSE

package/opentracing-cpp/opentracing-cpp.mk

@@ -4,8 +4,9 @@
 #
 ################################################################################
 
-OPENTRACING_CPP_VERSION = 1.5.1
-OPENTRACING_CPP_SITE = $(call github,opentracing,opentracing-cpp,v$(OPENTRACING_CPP_VERSION))
+OPENTRACING_CPP_VERSION = 1.6.0
+OPENTRACING_CPP_SITE = \
+	$(call github,opentracing,opentracing-cpp,v$(OPENTRACING_CPP_VERSION))
 OPENTRACING_CPP_LICENSE = Apache-2.0
 OPENTRACING_CPP_LICENSE_FILES = LICENSE