llvm18: libunwind is in $libDir too on x86

Installing: /packages/llvm18_x86-18.1.7-3/.self/lib/x86/libunwind.so.1.0

sys-devel/llvm/llvm18-18.1.7.recipe

@@ -695,13 +695,8 @@ INSTALL()
 		libLLVM* \
 		libLTO	\
 		liblld* \
-		libRemarks
-
-	oldLibDir=$libDir
-	libDir=$prefix/lib
-	prepareInstalledDevelLibs \
+		libRemarks \
 		libunwind
-	libDir=$oldLibDir
 
 	# adjust cmake library paths because prepareInstalledDevelLibs moved them
 	sed -i 's,\${_IMPORT_PREFIX}/lib/,\${_IMPORT_PREFIX}/develop/lib/,' \
@@ -768,7 +763,7 @@ INSTALL()
 
 	# libunwind package
 	packageEntries libunwind \
-		$prefix/lib/libunwind*
+		$libDir/libunwind*
 
 	packageEntries libunwind_devel \
 		$developLibDir/libunwind* \