Fixed non-fatal out-of-bounds read in SSE2 SIMD code reported by valgrind when decompressing a JPEG image to a bitmap buffer whose size was not a multiple of 16 bytes.

simd/jsimdext.inc

@@ -86,6 +86,8 @@ section .note.GNU-stack noalloc noexec nowrite progbits
 %define SEG_CONST   .rodata progbits alloc noexec nowrite align=16
 %endif
 
+%define STRICT_MEMORY_ACCESS 1
+
 ; To make the code position-independent, append -DPIC to the commandline
 ;
 %define GOT_SYMBOL  _GLOBAL_OFFSET_TABLE_	; ELF supports PIC