correctly sized arrays

compiler/backend/src/org/jetbrains/jet/codegen/signature/BothSignatureWriter.java

@@ -463,7 +463,7 @@ public class BothSignatureWriter {
         for (JvmMethodParameterSignature p : kotlinParameterTypes) {
             jvmParameterTypes.add(p.getAsmType());
         }
-        return new Method(name, jvmReturnType, jvmParameterTypes.toArray(new Type[0]));
+        return new Method(name, jvmReturnType, jvmParameterTypes.toArray(new Type[jvmParameterTypes.size()]));
     }
 
     @Nullable

compiler/backend/src/org/jetbrains/jet/codegen/signature/JvmMethodSignature.java

@@ -75,7 +75,8 @@ public class JvmMethodSignature {
             @NotNull Type returnType,
             @NotNull List<JvmMethodParameterSignature> parameterSignatures
     ) {
-        return new JvmMethodSignature(new Method(methodName, returnType, getTypes(parameterSignatures).toArray(new Type[0])),
+        List<Type> types = getTypes(parameterSignatures);
+        return new JvmMethodSignature(new Method(methodName, returnType, types.toArray(new Type[types.size()])),
                                       parameterSignatures);
     }