Fix NPE

Author: MarcMil

soot-infoflow-android/src/soot/jimple/infoflow/android/entryPointCreators/AndroidEntryPointCreator.java

@@ -291,17 +291,16 @@ protected SootMethod createDummyMainInternal() {
 				applicationClassUse = applicationClass;
 			}
 			localVarsForClasses.put(applicationClass, applicationLocal);
+			SootClass cw = Scene.v().getSootClassUnsafe(AndroidEntryPointConstants.CONTEXT_WRAPPER);
+			if (cw == null) {
+				//use application local type as a fallback, since this class also implements context wrapper
+				cw = ((RefType) applicationLocal.getType()).getSootClass();
+			}
+			if (cw != null)
+				body.getUnits().add(j.newInvokeStmt(j.newVirtualInvokeExpr(applicationLocal,
+						Scene.v().makeMethodRef(cw, AndroidEntryPointConstants.ATTACH_BASE_CONTEXT, false))));
 		}
 
-		SootClass cw = Scene.v().getSootClassUnsafe(AndroidEntryPointConstants.CONTEXT_WRAPPER);
-		if (cw == null) {
-			//use application local type as a fallback, since this class also implements context wrapper
-			cw = ((RefType) applicationLocal.getType()).getSootClass();
-		}
-		if (cw != null)
-			body.getUnits().add(j.newInvokeStmt(j.newVirtualInvokeExpr(applicationLocal,
-					Scene.v().makeMethodRef(cw, AndroidEntryPointConstants.ATTACH_BASE_CONTEXT, false))));
-
 		Map<SootClass, ContentProviderEntryPointCreator> cpComponents = new HashMap<>();
 		// For some weird reason unknown to anyone except the flying spaghetti
 		// monster, the onCreate() methods of content providers run even before