Bug 1156621 - Don't assume --without-system-nspr. r=glandium

--HG--
extra : rebase_source : 1e1535572d91718d494884eab4119e772df84768

media/mtransport/test/moz.build

@@ -41,7 +41,7 @@ if CONFIG['OS_TARGET'] == 'Linux':
         '/media/mtransport/third_party/nrappkit/src/port/linux/include',
     ]
     USE_LIBS += [
-        'static:/nsprpub/lib/libc/src/plc4',
+        'nspr',
     ]
     OS_LIBS += [
         '-lrt',

media/webrtc/signaling/test/standalone/moz.build

@@ -25,7 +25,7 @@ for var in ('MOZILLA_INTERNAL_API', 'MOZILLA_XPCOMRT_API'):
 
 if CONFIG['OS_TARGET'] == 'Linux':
     USE_LIBS += [
-        'static:/nsprpub/lib/libc/src/plc4',
+        'nspr',
     ]
     OS_LIBS += [
         '-lrt',