nim: update osproc.nim.patch

packages/nim/osproc.nim.patch

@@ -1,11 +1,12 @@
---- ./lib/pure/osproc.a.nim	2018-11-20 22:10:39.892888610 +0000
-+++ ./lib/pure/osproc.nim	2018-11-20 22:11:48.031167863 +0000
-@@ -792,7 +792,7 @@
+diff -uNr nim-1.2.0/lib/pure/osproc.nim nim-1.2.0.mod/lib/pure/osproc.nim
+--- nim-1.2.0/lib/pure/osproc.nim	2020-04-03 15:47:18.000000000 +0300
++++ nim-1.2.0.mod/lib/pure/osproc.nim	2020-04-05 21:02:38.903445889 +0300
+@@ -852,7 +852,7 @@
      if poEvalCommand in options:
        const useShPath {.strdefine.} =
          when not defined(android): "/bin/sh"
 -        else: "/system/bin/sh"
 +        else: "@TERMUX_PREFIX@/bin/sh"
-       sysCommand = useShPath
-       sysArgsRaw = @[sysCommand, "-c", command]
+       data.sysCommand = useShPath
+       sysArgsRaw = @[data.sysCommand, "-c", command]
        assert args.len == 0, "`args` has to be empty when using poEvalCommand."