- Add patch to fix build error on i386 architecture:

Compiling c_src/double-conversion/strtod.cc
c_src/double-conversion/strtod.cc:41:18: error: unused variable 'kMaxExactDoubleIntegerDecimalDigits' [-Werror,-Wunused-const-variable]
static const int kMaxExactDoubleIntegerDecimalDigits = 15;
                 ^
c_src/double-conversion/strtod.cc:58:21: error: variable 'exact_powers_of_ten' is not needed and will not be emitted [-Werror,-Wunneeded-internal-declaration]
static const double exact_powers_of_ten[] = {
                    ^
c_src/double-conversion/strtod.cc:84:18: error: unused variable 'kExactPowersOfTenSize' [-Werror,-Wunused-const-variable]
static const int kExactPowersOfTenSize = ARRAY_SIZE(exact_powers_of_ten);
                 ^

Thanks to jrm@ for help with testing

Reported by:	pkg-fallout

1 files changed, 28 insertions, 0 deletions

diff --git a/net-im/ejabberd/files/patch-deps_jiffy_c__src_double-conversion_strtod.cc b/net-im/ejabberd/files/patch-deps_jiffy_c__src_double-conversion_strtod.cc
new file mode 100644
index 000000000000..581a4d3f22e2
--- /dev/null
+++ b/net-im/ejabberd/files/patch-deps_jiffy_c__src_double-conversion_strtod.cc
@@ -0,0 +1,28 @@
+--- deps/jiffy/c_src/double-conversion/strtod.cc.orig	2020-04-10 09:23:29 UTC
++++ deps/jiffy/c_src/double-conversion/strtod.cc
+@@ -38,7 +38,9 @@ namespace double_conversion {
+ // 2^53 = 9007199254740992.
+ // Any integer with at most 15 decimal digits will hence fit into a double
+ // (which has a 53bit significand) without loss of precision.
++#if defined(DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS)
+ static const int kMaxExactDoubleIntegerDecimalDigits = 15;
++#endif
+ // 2^64 = 18446744073709551616 > 10^19
+ static const int kMaxUint64DecimalDigits = 19;
+ 
+@@ -55,6 +57,7 @@ static const int kMinDecimalPower = -324;
+ static const uint64_t kMaxUint64 = UINT64_2PART_C(0xFFFFFFFF, FFFFFFFF);
+ 
+ 
++#if defined(DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS)
+ static const double exact_powers_of_ten[] = {
+   1.0,  // 10^0
+   10.0,
+@@ -82,6 +85,7 @@ static const double exact_powers_of_ten[] = {
+   10000000000000000000000.0
+ };
+ static const int kExactPowersOfTenSize = ARRAY_SIZE(exact_powers_of_ten);
++#endif
+ 
+ // Maximum number of significant digits in the decimal representation.
+ // In fact the value is 772 (see conversions.cc), but to give us some margin