Index: src/streams/gzipinputstream.cpp
===================================================================
--- a/src/streams/gzipinputstream.cpp
+++ b/src/streams/gzipinputstream.cpp	2011-10-08 09:55:16.982992324 -0300
@@ -29,6 +29,7 @@
     GZipInputStream* const p;
     InputStream* input;
     z_stream_s zstream;
+    bool started;
 
     Private(GZipInputStream* gi, InputStream* input, ZipFormat format);
     ~Private();
@@ -41,7 +42,7 @@
         :p(new Private(this, input, format)) {
 }
 GZipInputStream::Private::Private(GZipInputStream* gi,
-        InputStream* i, ZipFormat format) :p(gi), input(i) {
+        InputStream* i, ZipFormat format) :p(gi), input(i), started(false) {
     // initialize values that signal state
     p->m_status = Ok;
 
@@ -73,6 +74,7 @@
         r = inflateInit2(&zstream, -MAX_WBITS);
         break;
     }
+    started = true;
     if (r != Z_OK) {
         p->m_error = "Error initializing GZipInputStream.";
         dealloc();
@@ -94,7 +96,10 @@
 }
 void
 GZipInputStream::Private::dealloc() {
-    inflateEnd(&zstream);
+    if (started) {
+	inflateEnd(&zstream);
+	started = false;
+    }
     input = NULL;
 }
 bool
Index: src/streams/lzmainputstream.cpp
===================================================================
--- a/src/streams/lzmainputstream.cpp
+++ b/src/streams/lzmainputstream.cpp	2011-10-08 09:57:15.429992372 -0300
@@ -58,7 +58,7 @@
     CLzmaProps props;
     SRes res = LzmaProps_Decode(&props, (const Byte*)data, LZMA_PROPS_SIZE);
     int64_t size = readLittleEndianInt64(data + LZMA_PROPS_SIZE);
-    return res == SZ_OK && props.dicSize <= 8388608 && (size == -1 ||
+    return res == SZ_OK && props.dicSize <= 0x2000000 && (size == -1 ||
         (props.dicSize < size && size < 1099511627776LL)); // only support < 1Tb 
 }
 LZMAInputStream::LZMAInputStream(InputStream* input)