Merge branch 'maint-0.2.7' into maint-0.2.8

changes/bug19213

@@ -0,0 +1,3 @@
+  o Minor bugfixes (compilation):
+    - Cause the unit tests to compile correctly on mingw64 versions
+      that lack sscanf. Fixes bug 19213. Bugfix on 0.2.7.1-alpha.

src/test/test_util.c

@@ -4679,7 +4679,7 @@ test_util_writepid(void *arg)
   contents = read_file_to_str(fname, 0, NULL);
   tt_assert(contents);
 
-  int n = sscanf(contents, "%lu\n%c", &pid, &c);
+  int n = tor_sscanf(contents, "%lu\n%c", &pid, &c);
   tt_int_op(n, OP_EQ, 1);
 
 #ifdef _WIN32