debian package: add rclconfig patch

packaging/debian/debian/changelog

@@ -1,4 +1,4 @@
-recoll (1.27.9-1~ppaPPAVERS~SERIES1) SERIES; urgency=low
+recoll (1.27.9-2~ppaPPAVERS~SERIES1) SERIES; urgency=low
 
   * Fix bug in result table display.
 

packaging/debian/debian/patches/rclconfig-avoid-post-increment-before-end.diff

@@ -0,0 +1,26 @@
+diff --git a/common/rclconfig.cpp b/common/rclconfig.cpp
+index 1d5afba5d..dbbdcb256 100644
+--- a/common/rclconfig.cpp
++++ b/common/rclconfig.cpp
+@@ -1689,13 +1689,20 @@ bool RclConfig::processFilterCmd(std::vector<std::string>& cmd) const
+     bool hasinterp = !stringlowercmp("python", *it) ||
+         !stringlowercmp("perl", *it);
+ 
+-    *it++ = findFilter(*it);
++    // Note that, if the cmd vector size is 1, post-incrementing the
++    // iterator in the following statement, which works on x86, leads
++    // to a crash on ARM with gcc 6 and 8 (at least), which does not
++    // seem right (it should just become cmd.end() ?) but
++    // whatever... We do it later then.
++    *it = findFilter(*it);
++
+     if (hasinterp) {
+         if (cmd.size() < 2) {
+             LOGERR("processFilterCmd: python/perl cmd: no script?. [" <<
+                    stringsToString(cmd) << "]\n");
+             return false;
+         } else {
++            ++it;
+             *it = findFilter(*it);
+         }
+     }

packaging/debian/debian/patches/series

@@ -0,0 +1 @@
+rclconfig-avoid-post-increment-before-end.diff