fix PrintAST test run

The refactored shouldDumpFunction was now rejecting functions without a
location. This is fixed now.

Author: redsun82

cpp/ql/test/library-tests/ir/ir/PrintConfig.qll

@@ -1,17 +1,15 @@
 private import cpp
 
 /**
- * Holds if an AST or IR with the specified location should be printed in the test output.
- *
- * This predicate excludes locations in standard headers.
+ * Holds if the specified location is in standard headers.
  */
-predicate shouldDumpLocation(Location loc) {
-  not loc.getFile().getAbsolutePath().regexpMatch(".*/include/[^/]+")
+predicate locationIsInStandardHeaders(Location loc) {
+  loc.getFile().getAbsolutePath().regexpMatch(".*/include/[^/]+")
 }
 
 /**
  * Holds if the AST or IR for the specified function should be printed in the test output.
  *
  * This predicate excludes functions defined in standard headers.
  */
-predicate shouldDumpFunction(Function func) { shouldDumpLocation(func.getLocation()) }
+predicate shouldDumpFunction(Function func) { not locationIsInStandardHeaders(func.getLocation()) }

cpp/ql/test/library-tests/ir/ir/operand_locations.ql

@@ -3,5 +3,5 @@ private import semmle.code.cpp.ir.IR
 private import PrintConfig
 
 from Operand a
-where shouldDumpLocation(a.getLocation())
+where not locationIsInStandardHeaders(a.getLocation())
 select a, a.getDumpString()