Avoid using a misaligned pointer.

FossilOrigin-Name: 1ecb3aa13de5c8dc611b814ff34010de0bd90aae73d88aa37a59c4627be4cc2d

diff --cc manifest
index 0a38981e1096d3cb425ea4d859d473a8f82ff9b6,d84ca466c71fff42a61e6df459acf97db36c89d4..9f8ea7f5b7654efe2a022ffcc601f8abcc5a2b3c
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Fix\sthe\susage\sof\sposix_fallocate()\sso\sthat\sit\scorrectly\sresponds\sto\nEINVAL\sreturns.
- D 2018-06-02T19:01:54.408
 -C Work\saround\sa\ssanitizer\swarning\sabout\sa\spointer\sbeing\sonly\s4-byte\saligned\ninstead\sof\s8-byte\saligned.
 -D 2018-06-02T16:32:04.483
++C Avoid\susing\sa\smisaligned\spointer.
++D 2018-06-02T19:14:58.082
  F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
  F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
  F Makefile.in bfc40f350586923e0419d2ea4b559c37ec10ee4b6e210e08c14401f8e340f0da
@@@ -1730,8 -1730,10 +1730,8 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
- P 3d5eae1c26353cdee89f31f1293b05c0edb494c775ba0912d9b4fda9ab0ef304 ab3a5539db82814cafb832cdaebd1e14566139306453ef9cdba6b244a994fe0b
- R 64e7a20d51f9d1438ac9592daa9dd6bf
- T +closed ab3a5539db82814cafb832cdaebd1e14566139306453ef9cdba6b244a994fe0b
 -P e336cf00486bdc0ec04ecded2b7c874d73a87e6aba3544e3678bedfb9a4af3b6
 -R 8f6289962dafd62afd0dcc62419aace8
 -T *branch * align8-fix
 -T *sym-align8-fix *
 -T -sym-trunk *
++P ce2c3e7a875ede4366c48660ae8239d2b74e5f690ad5059844a45f1164f41e61 1b807b51cdf455b4f54216b73fd22bbc90f94e24222401e045f88cfd27f487e3
++R 2db4b8b40a57a71d528932145db72c5a
++T +closed 1b807b51cdf455b4f54216b73fd22bbc90f94e24222401e045f88cfd27f487e3
  U drh
- Z 8bf90c20199723dfc867a912d22476ec
 -Z b4fcb02096c47b5fe0c3d849fd18fe13
++Z 5a6c767d04a951cad28a5422f8a9694a

diff --cc manifest.uuid
index cb15120d4f3bbc229cd820d5d6d29850bbf328b1,bdf7618fab53159f1cb22975ea941f09e8f60e6f..e0a78a25f616e53fe12c820e513344a13819b421
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- ce2c3e7a875ede4366c48660ae8239d2b74e5f690ad5059844a45f1164f41e61
 -1b807b51cdf455b4f54216b73fd22bbc90f94e24222401e045f88cfd27f487e3
++1ecb3aa13de5c8dc611b814ff34010de0bd90aae73d88aa37a59c4627be4cc2d