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();
+    }
+}

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

@@ -0,0 +1,9 @@
+package test
+
+import java.util.*
+
+public open class SyntaxError : Object() {
+    open fun foo() : Int? {
+        throw UnsupportedOperationException()
+    }
+}

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

@@ -0,0 +1,6 @@
+namespace test
+
+open class test.SyntaxError : java.lang.Object {
+    final /*constructor*/ fun <init>(): test.SyntaxError
+    open fun foo(): jet.Int?
+}