moving static function variables as object attributes

Author: andreagilardoni

src/decompress/lzss.cpp

@@ -257,7 +257,6 @@ LZSSDecoder::status LZSSDecoder::decompress(uint8_t* const buffer, uint32_t size
 }
 
 int LZSSDecoder::getbit(int n) { // get n bits from buffer
-    static uint32_t buf, buf_size=0;
     int x=0, c;
 
     // if the local bit buffer doesn't have enough bit get them

src/decompress/lzss.h

@@ -79,6 +79,8 @@ class LZSSDecoder {
 
     // get 1 bit from the available input buffer
     int getbit(int n);
+    // the following 2 are variables used by getbits
+    uint32_t buf, buf_size=0;
 
     enum FSM_STATES: uint8_t {
         FSM_0       = 0,