Mark qmf_window table static to atrac.c unit.

The table is not used anywhere else on libavcodec.
Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit 53493f9a)

libavcodec/atrac.c

@@ -33,7 +33,7 @@
 #include "atrac.h"
 
 float sf_table[64];
-float qmf_window[48];
+static float qmf_window[48];
 
 static const float qmf_48tap_half[24] = {
    -0.00001461907, -0.00009205479,-0.000056157569,0.00030117269,

libavcodec/atrac.h

@@ -30,7 +30,6 @@
 
 
 extern float sf_table[64];
-extern float qmf_window[48];
 
 void atrac_generate_tables(void);
 void atrac_iqmf (float *inlo, float *inhi, unsigned int nIn, float *pOut, float *delayBuf, float *temp);