Bug 737164 part B - use fallible or infallible strings appropriately in necko, r=jduell

--HG--
extra : rebase_source : 5fbaa24f4483a3f0b9ffdcd96669133af0b92d56

netwerk/base/src/nsNetAddr.cpp

@@ -75,14 +75,12 @@ NS_IMETHODIMP nsNetAddr::GetAddress(nsACString & aAddress)
   switch(mAddr.raw.family) {
   /* PR_NetAddrToString can handle INET and INET6, but not LOCAL. */
   case PR_AF_INET: 
-    if(!aAddress.SetCapacity(16))
-      return NS_ERROR_OUT_OF_MEMORY;
+    aAddress.SetCapacity(16);
     PR_NetAddrToString(&mAddr, aAddress.BeginWriting(), 16);
     aAddress.SetLength(strlen(aAddress.BeginReading()));
     break;
   case PR_AF_INET6:
-    if(!aAddress.SetCapacity(46))
-      return NS_ERROR_OUT_OF_MEMORY;
+    aAddress.SetCapacity(46);
     PR_NetAddrToString(&mAddr, aAddress.BeginWriting(), 46);
     aAddress.SetLength(strlen(aAddress.BeginReading()));
     break;

netwerk/base/src/nsUnicharStreamLoader.cpp

@@ -43,6 +43,8 @@
 
 #define SNIFFING_BUFFER_SIZE 512 // specified in draft-abarth-mime-sniff-06
 
+using mozilla::fallible_t;
+
 NS_IMETHODIMP
 nsUnicharStreamLoader::Init(nsIUnicharStreamLoaderObserver *aObserver)
 {
@@ -50,7 +52,7 @@ nsUnicharStreamLoader::Init(nsIUnicharStreamLoaderObserver *aObserver)
 
   mObserver = aObserver;
 
-  if (!mRawData.SetCapacity(SNIFFING_BUFFER_SIZE))
+  if (!mRawData.SetCapacity(SNIFFING_BUFFER_SIZE, fallible_t()))
     return NS_ERROR_OUT_OF_MEMORY;
 
   return NS_OK;
@@ -237,7 +239,7 @@ nsUnicharStreamLoader::WriteSegmentFun(nsIInputStream *,
     self->mDecoder->GetMaxLength(aSegment + consumed, srcLen, &dstLen);
 
     PRUint32 capacity = haveRead + dstLen;
-    if (!self->mBuffer.SetCapacity(capacity)) {
+    if (!self->mBuffer.SetCapacity(capacity, fallible_t())) {
       return NS_ERROR_OUT_OF_MEMORY;
     }