fixed helpers.cpp compilation without precompiled headers

Author: firewave

Makefile

@@ -670,7 +670,7 @@ cli/threadexecutor.o: cli/threadexecutor.cpp cli/cppcheckexecutor.h cli/executor
 test/fixture.o: test/fixture.cpp lib/check.h lib/color.h lib/config.h lib/errorlogger.h lib/errortypes.h lib/importproject.h lib/library.h lib/mathlib.h lib/path.h lib/platform.h lib/settings.h lib/standards.h lib/suppressions.h lib/utils.h test/fixture.h test/options.h test/redirect.h
 	$(CXX) ${INCLUDE_FOR_TEST} $(CPPFLAGS) $(CXXFLAGS) -c -o $@ test/fixture.cpp
 
-test/helpers.o: test/helpers.cpp externals/simplecpp/simplecpp.h lib/config.h lib/errortypes.h lib/mathlib.h lib/path.h lib/preprocessor.h lib/templatesimplifier.h lib/token.h lib/tokenize.h lib/tokenlist.h lib/utils.h lib/vfvalue.h test/helpers.h
+test/helpers.o: test/helpers.cpp externals/simplecpp/simplecpp.h lib/config.h lib/errortypes.h lib/importproject.h lib/library.h lib/mathlib.h lib/path.h lib/platform.h lib/preprocessor.h lib/settings.h lib/standards.h lib/suppressions.h lib/templatesimplifier.h lib/token.h lib/tokenize.h lib/tokenlist.h lib/utils.h lib/vfvalue.h test/helpers.h
 	$(CXX) ${INCLUDE_FOR_TEST} $(CPPFLAGS) $(CXXFLAGS) -c -o $@ test/helpers.cpp
 
 test/main.o: test/main.cpp externals/simplecpp/simplecpp.h lib/check.h lib/color.h lib/config.h lib/errorlogger.h lib/errortypes.h lib/importproject.h lib/library.h lib/mathlib.h lib/platform.h lib/preprocessor.h lib/settings.h lib/standards.h lib/suppressions.h lib/utils.h test/fixture.h test/options.h

test/helpers.h

@@ -19,6 +19,7 @@
 #ifndef helpersH
 #define helpersH
 
+#include "settings.h"
 #include "tokenize.h"
 #include "tokenlist.h"
 
@@ -27,7 +28,6 @@
 
 class Token;
 class Preprocessor;
-class Settings;
 class Suppressions;
 
 class givenACodeSampleToTokenize {