avcodec/pnmdec: Fix indentation

Forgotten after ff1450e449.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavcodec/pnmdec.c

@@ -166,17 +166,17 @@ static int pnm_decode_frame(AVCodecContext *avctx, AVFrame *p,
                 ptr+= linesize;
             }
         }else{
-        for (i = 0; i < avctx->height; i++) {
+            for (int i = 0; i < avctx->height; i++) {
                 if (!upgrade)
                     samplecpy(ptr, s->bytestream, n, s->maxval);
                 else if (upgrade == 1) {
-                unsigned int j, f = (255 * 128 + s->maxval / 2) / s->maxval;
-                for (j = 0; j < n; j++)
+                    unsigned int f = (255 * 128 + s->maxval / 2) / s->maxval;
+                    for (unsigned j = 0; j < n; j++)
                         ptr[j] = (s->bytestream[j] * f + 64) >> 7;
                 } else if (upgrade == 2) {
-                unsigned int j, v, f = (65535 * 32768 + s->maxval / 2) / s->maxval;
-                for (j = 0; j < n / 2; j++) {
-                    v = AV_RB16(s->bytestream + 2*j);
+                    unsigned int f = (65535 * 32768 + s->maxval / 2) / s->maxval;
+                    for (unsigned j = 0; j < n / 2; j++) {
+                        unsigned v = AV_RB16(s->bytestream + 2*j);
                         ((uint16_t *)ptr)[j] = (v * f + 16384) >> 15;
                     }
                 }
@@ -358,7 +358,8 @@ static int pnm_decode_frame(AVCodecContext *avctx, AVFrame *p,
                     g += p->linesize[0] / 4;
                     b += p->linesize[1] / 4;
                 }
-            }        }
+            }
+        }
         break;
     case AV_PIX_FMT_GRAYF32:
         if (!s->half) {