arm: hpeldsp: fix put_pixels8_y2_{,no_rnd_}armv6

The overread avoidance fix in cbddee1cca
broke the computation for the last row since it prevented the safe
reading from the height+1-th row.

CC: libav-stable@libav.org

libavcodec/arm/hpeldsp_armv6.S

@@ -132,12 +132,11 @@ function ff_put_pixels8_y2_armv6, export=1
         uhadd8          r9,  r5,  r7
         eor             r11, r5,  r7
         and             r10, r10, r12
-        ldrc_pre        ne,  r4,  r1,  r2
+        ldr_pre         r4,  r1,  r2
         uadd8           r8,  r8,  r10
         and             r11, r11, r12
         uadd8           r9,  r9,  r11
-        it              ne
-        ldrne           r5,  [r1, #4]
+        ldr             r5,  [r1, #4]
         uhadd8          r10, r4,  r6
         eor             r6,  r4,  r6
         uhadd8          r11, r5,  r7
@@ -194,10 +193,9 @@ function ff_put_pixels8_y2_no_rnd_armv6, export=1
 1:
         subs            r3,  r3,  #2
         uhadd8          r8,  r4,  r6
-        ldrc_pre        ne,  r4,  r1,  r2
+        ldr_pre         r4,  r1,  r2
         uhadd8          r9,  r5,  r7
-        it              ne
-        ldrne           r5,  [r1, #4]
+        ldr             r5,  [r1, #4]
         uhadd8          r12, r4,  r6
         ldrc_pre        ne,  r6,  r1,  r2
         uhadd8          r14, r5,  r7