Prevent NPE

Author: MarcMil

soot-infoflow/src/soot/jimple/infoflow/sourcesSinks/manager/BaseSourceSinkManager.java

@@ -294,13 +294,15 @@ protected Collection<ISourceSinkDefinition> getSinkDefinitions(Stmt sCallSite, I
 
 			final String subSig = callee.getSubSignature();
 
-			// Check whether we have any of the interfaces on the list
-			for (SootClass i : parentClassesAndInterfaces
-					.getUnchecked(sCallSite.getInvokeExpr().getMethod().getDeclaringClass())) {
-				if (i.declaresMethod(subSig)) {
-					Collection<ISourceSinkDefinition> def = this.sinkMethods.get(i.getMethod(subSig));
-					if (def.size() > 0)
-						return def;
+			SootClass decl = sCallSite.getInvokeExpr().getMethod().getDeclaringClass();
+			if (decl != null) {
+				// Check whether we have any of the interfaces on the list
+				for (SootClass i : parentClassesAndInterfaces.getUnchecked(decl)) {
+					if (i.declaresMethod(subSig)) {
+						Collection<ISourceSinkDefinition> def = this.sinkMethods.get(i.getMethod(subSig));
+						if (def.size() > 0)
+							return def;
+					}
 				}
 			}