Fix seek regression test: several AVERROR(EIO) correctly changed to AVERROR_EOF.

Originally committed as revision 20141 to svn://svn.ffmpeg.org/ffmpeg/trunk

tests/seek.regression.ref

@@ -2582,7 +2582,7 @@ ret: 0 st: 0 dts:0.788345 pts:0.788345 pos:17383 size:1024 flags:1
 ret: 0 st: 0 ts:-0.317506 flags:1
 ret: 0 st: 0 dts:0.000000 pts:0.000000 pos:0 size:1024 flags:1
 ret: 0 st:-1 ts:2.576668 flags:0
-ret:-5
+ret:-32
 ret: 0 st:-1 ts:1.470835 flags:1
 ret: 0 st: 0 dts:1.470839 pts:1.470839 pos:32432 size:1024 flags:1
 ret: 0 st: 0 ts:0.364989 flags:0
@@ -2590,13 +2590,13 @@ ret: 0 st: 0 dts:0.364989 pts:0.364989 pos:8048 size:1024 flags:1
 ret: 0 st: 0 ts:-0.740816 flags:1
 ret: 0 st: 0 dts:0.000000 pts:0.000000 pos:0 size:1024 flags:1
 ret: 0 st:-1 ts:2.153336 flags:0
-ret:-5
+ret:-32
 ret: 0 st:-1 ts:1.047503 flags:1
 ret: 0 st: 0 dts:1.047483 pts:1.047483 pos:23097 size:1024 flags:1
 ret: 0 st: 0 ts:-0.058322 flags:0
 ret: 0 st: 0 dts:0.000000 pts:0.000000 pos:0 size:1024 flags:1
 ret: 0 st: 0 ts:2.835828 flags:1
-ret:-5
+ret:-32
 ret: 0 st:-1 ts:1.730004 flags:0
 ret: 0 st: 0 dts:1.730023 pts:1.730023 pos:38147 size:1024 flags:1
 ret: 0 st:-1 ts:0.624171 flags:1
@@ -2604,7 +2604,7 @@ ret: 0 st: 0 dts:0.624172 pts:0.624172 pos:13763 size:1024 flags:1
 ret: 0 st: 0 ts:-0.481678 flags:0
 ret: 0 st: 0 dts:0.000000 pts:0.000000 pos:0 size:1024 flags:1
 ret: 0 st: 0 ts:2.412517 flags:1
-ret:-5
+ret:-32
 ret: 0 st:-1 ts:1.306672 flags:0
 ret: 0 st: 0 dts:1.306667 pts:1.306667 pos:28812 size:1024 flags:1
 ret: 0 st:-1 ts:0.200839 flags:1
@@ -2618,7 +2618,7 @@ ret: 0 st: 0 dts:0.883356 pts:0.883356 pos:19478 size:1024 flags:1
 ret: 0 st:-1 ts:-0.222493 flags:1
 ret: 0 st: 0 dts:0.000000 pts:0.000000 pos:0 size:1024 flags:1
 ret: 0 st: 0 ts:2.671655 flags:0
-ret:-5
+ret:-32
 ret: 0 st: 0 ts:1.565850 flags:1
 ret: 0 st: 0 dts:1.565850 pts:1.565850 pos:34527 size:1024 flags:1
 ret: 0 st:-1 ts:0.460008 flags:0
@@ -3662,7 +3662,7 @@ ret: 0 st: 0 dts:0.788345 pts:0.788345 pos:17383 size:1024 flags:1
 ret: 0 st: 0 ts:-0.317506 flags:1
 ret: 0 st: 0 dts:0.000000 pts:0.000000 pos:0 size:1024 flags:1
 ret: 0 st:-1 ts:2.576668 flags:0
-ret:-5
+ret:-32
 ret: 0 st:-1 ts:1.470835 flags:1
 ret: 0 st: 0 dts:1.470839 pts:1.470839 pos:32432 size:1024 flags:1
 ret: 0 st: 0 ts:0.364989 flags:0
@@ -3670,13 +3670,13 @@ ret: 0 st: 0 dts:0.364989 pts:0.364989 pos:8048 size:1024 flags:1
 ret: 0 st: 0 ts:-0.740816 flags:1
 ret: 0 st: 0 dts:0.000000 pts:0.000000 pos:0 size:1024 flags:1
 ret: 0 st:-1 ts:2.153336 flags:0
-ret:-5
+ret:-32
 ret: 0 st:-1 ts:1.047503 flags:1
 ret: 0 st: 0 dts:1.047483 pts:1.047483 pos:23097 size:1024 flags:1
 ret: 0 st: 0 ts:-0.058322 flags:0
 ret: 0 st: 0 dts:0.000000 pts:0.000000 pos:0 size:1024 flags:1
 ret: 0 st: 0 ts:2.835828 flags:1
-ret:-5
+ret:-32
 ret: 0 st:-1 ts:1.730004 flags:0
 ret: 0 st: 0 dts:1.730023 pts:1.730023 pos:38147 size:1024 flags:1
 ret: 0 st:-1 ts:0.624171 flags:1
@@ -3684,7 +3684,7 @@ ret: 0 st: 0 dts:0.624172 pts:0.624172 pos:13763 size:1024 flags:1
 ret: 0 st: 0 ts:-0.481678 flags:0
 ret: 0 st: 0 dts:0.000000 pts:0.000000 pos:0 size:1024 flags:1
 ret: 0 st: 0 ts:2.412517 flags:1
-ret:-5
+ret:-32
 ret: 0 st:-1 ts:1.306672 flags:0
 ret: 0 st: 0 dts:1.306667 pts:1.306667 pos:28812 size:1024 flags:1
 ret: 0 st:-1 ts:0.200839 flags:1
@@ -3698,7 +3698,7 @@ ret: 0 st: 0 dts:0.883356 pts:0.883356 pos:19478 size:1024 flags:1
 ret: 0 st:-1 ts:-0.222493 flags:1
 ret: 0 st: 0 dts:0.000000 pts:0.000000 pos:0 size:1024 flags:1
 ret: 0 st: 0 ts:2.671655 flags:0
-ret:-5
+ret:-32
 ret: 0 st: 0 ts:1.565850 flags:1
 ret: 0 st: 0 dts:1.565850 pts:1.565850 pos:34527 size:1024 flags:1
 ret: 0 st:-1 ts:0.460008 flags:0