[PATCH v2 2/3] wireshark: Make fallback path construction more reliable

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We only need to strip $ws_prefix from $ws_plugindir if we've
retrieved it from pkg-config: if we're building it ourselves
from $libdir, we can just use it without further processing.
---
 m4/virt-wireshark.m4 | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/m4/virt-wireshark.m4 b/m4/virt-wireshark.m4
index 556272a..f253c86 100644
--- a/m4/virt-wireshark.m4
+++ b/m4/virt-wireshark.m4
@@ -35,18 +35,18 @@ AC_DEFUN([LIBVIRT_CHECK_WIRESHARK],[
         dnl On some systems the plugindir variable may not be stored within pkg config.
         dnl Fall back to older style of constructing the plugin dir path.
         ws_plugindir="$libdir/wireshark/plugins/$ws_modversion"
-        ws_prefix="$prefix"
+      else
+        if test "x$ws_prefix" = "x" ; then
+          dnl If the wireshark prefix cannot be retrieved from pkg-config,
+          dnl /usr is our best bet
+          ws_prefix="/usr"
+        fi
+        dnl Replace the wireshark prefix with our own.
+        dnl Note that $(prefix) is kept verbatim at this point in time, and will
+        dnl only be expanded later, when make is called: this makes it possible
+        dnl to override the prefix at compilation or installation time
+        ws_plugindir='$(prefix)'"${ws_plugindir#$ws_prefix}"
       fi
-      if test "x$ws_prefix" = "x" ; then
-        dnl If the wireshark prefix cannot be retrieved from pkg-config,
-        dnl /usr is our best bet
-        ws_prefix="/usr"
-      fi
-      dnl Replace the wireshark prefix with our own.
-      dnl Note that $(prefix) is kept verbatim at this point in time, and will
-      dnl only be expanded later, when make is called: this makes it possible
-      dnl to override the prefix at compilation or installation time
-      ws_plugindir='$(prefix)'"${ws_plugindir#$ws_prefix}"
     elif test "x$with_ws_plugindir" = "xno" || test "x$with_ws_plugindir" = "xyes"; then
       AC_MSG_ERROR([ws-plugindir must be used only with valid path])
     else
-- 
2.7.4

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