Added test with syntax error in alternative signature annotation.

compiler/testData/readJavaBinaryClass/kotlinSignature/error/SyntaxError.java

@@ -0,0 +1,10 @@
+package test;
+
+import jet.runtime.typeinfo.KotlinSignature;
+
+public class SyntaxError {
+    @KotlinSignature("fun foo(,) : Int")
+    public Integer foo() {
+        throw new UnsupportedOperationException();
+    }
+}