memleak

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@7462 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavutil/aes.c

@@ -105,7 +105,7 @@ void av_aes_encrypt(AVAES *a){
 
 // this is based on the reference AES code by Paulo Barreto and Vincent Rijmen
 AVAES *av_aes_init(uint8_t *key, int keyBits) {
-    AVAES *a= av_malloc(sizeof(AVAES));
+    AVAES *a;
     int i, j, t, rconpointer = 0;
     uint8_t tk[8][4];
     int KC= keyBits/32;
@@ -131,11 +131,12 @@ AVAES *av_aes_init(uint8_t *key, int keyBits) {
         }
     }
 
-    a->rounds= ROUNDS;
-
     if(keyBits!=128 && keyBits!=192 && keyBits!=256)
         return NULL;
 
+    a= av_malloc(sizeof(AVAES));
+    a->rounds= ROUNDS;
+
     memcpy(tk, key, KC*4);
 
     for(t= 0; t < (ROUNDS+1)*4; ) {