Fix handling of empty third argument of use_with() and use_enable().

diff --git a/bin/ebuild.sh b/bin/ebuild.sh
index 4778afbe9c6902fa51cc04421a82f830d7081146..b46d14a6341542758d6d525cbf20a0c9dcdfd8c0 100755 (executable)
--- a/bin/ebuild.sh
+++ b/bin/ebuild.sh
@@ -230,7 +230,7 @@ use_with() {
                return 1
        fi
 
-       local UW_SUFFIX=${3:+=$3}
+       local UW_SUFFIX=${3+=$3}
        local UWORD=${2:-$1}
 
        if useq $1; then
@@ -248,7 +248,7 @@ use_enable() {
                return 1
        fi
 
-       local UE_SUFFIX=${3:+=$3}
+       local UE_SUFFIX=${3+=$3}
        local UWORD=${2:-$1}
 
        if useq $1; then