fixed issue with incorrect recalculation of max locals when source method has...

fixed issue with incorrect recalculation of max locals when source method has unused vars in the debug info

src/org/objectweb/asm/MethodWriter.java

@@ -35,6 +35,7 @@ package org.objectweb.asm;
  * instruction to a byte vector, in the order these methods are called.
  * 
  * @author Eric Bruneton
+ * @author Eugene Kuleshov
  */
 class MethodWriter implements MethodVisitor {
 
@@ -1055,6 +1056,15 @@ class MethodWriter implements MethodVisitor {
                 .putShort(cw.newUTF8(name))
                 .putShort(cw.newUTF8(desc))
                 .putShort(index);
+        
+        if(computeMaxs) {
+            // updates max locals
+            char c = desc.charAt(0);
+            int n = index + ( c=='L' || c=='D' ? 2 : 1);
+            if (n > maxLocals) {
+                maxLocals = n;
+            }
+        }
     }
 
     public void visitLineNumber(final int line, final Label start) {

test/conform/org/objectweb/asm/commons/LocalVariablesSorterTest.java

@@ -50,7 +50,7 @@ public class LocalVariablesSorterTest extends AbstractTest {
 
     public void test() throws Exception {
         ClassReader cr = new ClassReader(is);
-        ClassWriter cw = new ClassWriter(false, true);
+        ClassWriter cw = new ClassWriter(true, true);
         cr.accept(new ClassAdapter(cw) {
             public MethodVisitor visitMethod(
                 int access,