fixed bug in visitLocalVariable (update max locals: 'L' was used instead of 'J' for 'long')

[[Split portion of a mixed commit.]]

src/org/objectweb/asm/MethodWriter.java

@@ -1060,7 +1060,7 @@ class MethodWriter implements MethodVisitor {
         if(computeMaxs) {
             // updates max locals
             char c = desc.charAt(0);
-            int n = index + ( c=='L' || c=='D' ? 2 : 1);
+            int n = index + (c == 'J' || c == 'D' ? 2 : 1);
             if (n > maxLocals) {
                 maxLocals = n;
             }