Bug 93066 - Don't use FindCharInSet when searching for only one character. r=sspitzer, sr=alecf

mailnews/mime/src/mimedrft.cpp

@@ -1886,7 +1886,7 @@ mime_decompose_file_init_fn ( void *stream_closure, MimeHeaders *headers )
     // the content type may contain a charset. i.e. text/html; ISO-2022-JP...we want to strip off the charset
     // before we ask the mime service for a mime info for this content type.
     nsCAutoString contentType (newAttachment->type);
-    PRInt32 pos = contentType.FindCharInSet(";");
+    PRInt32 pos = contentType.FindChar(';');
     if (pos > 0)
       contentType.Truncate(pos);
     nsresult  rv = NS_OK;

mailnews/mime/src/mimemoz2.cpp

@@ -274,7 +274,7 @@ ValidateRealName(nsMsgAttachmentData *aAttach, MimeHeaders *aHdrs)
     nsString  newAttachName(NS_LITERAL_STRING("attachment"));
     nsresult  rv = NS_OK;
     nsCAutoString contentType (aAttach->real_type);
-    PRInt32 pos = contentType.FindCharInSet(";");
+    PRInt32 pos = contentType.FindChar(';');
     if (pos > 0)
       contentType.Truncate(pos);