[CPP-370] Minor textual tweaks.

cpp/ql/src/Likely Bugs/Format/NonConstantFormat.ql

@@ -70,8 +70,7 @@ class ConstFlow extends DataFlow::Configuration {
   ConstFlow() { this = "ConstFlow" }
 
   override predicate isSource(DataFlow::Node source) { 
-  	none()
-    //isConst(source.asExpr())
+    isConst(source.asExpr())
   }
 
   override predicate isSink(DataFlow::Node sink) {

cpp/ql/test/query-tests/Likely Bugs/Format/NonConstantFormat/NonConstantFormat.c

@@ -2,7 +2,7 @@ extern int printf(const char *fmt, ...);
 
 // For the following `...gettext` functions, we assume that
 // all translations preserve the type and order of `%` specifiers
-// (and hence are safe to use as format strings).  This is
+// (and hence are safe to use as format strings).  This
 // assumption is hard-coded into the query.
 
 extern char *gettext (const char *__msgid);